You are invited to a reception at the british m useum at 30 p m. on F riday, 20th a pril

Model answers
A1 a car engine
2 part of a mobile phone
3 part of a computer
B1 a puzzle
2 an emergency alarm
3 the heating control
4 the TV control
Unit 48
1 
1 Jackie might have/might’ve missed the train. 
2 They should have/should’ve got home by now. 
3 Might the children have stayed late at school? 
4 I must have/must’ve left the keys in my coat 
pocket.
5 Carol might not have/mightn’t have received 
your email. 
2 
1 B 2 A 3 A 4 B 
3 
1 A 2 C 3 B 4 A 5 C 6 A 7 C 8 B
Unit 49
1 
1 Has he got to wear a uniform? 
2 We had to get an application form. 
3 Serena will have to get a new mobile phone. 
4 Did you have to wait a long time? 
5 Guests must leave their hotel rooms before midday.
2 
1 mustn’t be 2 Do I have to/Must I 3 don’t 
have to 4 Am I allowed to 5 aren’t allowed to
6 have to 7 you have to 8 haven’t got to/ 
don’t have to 
3 
1 must to do 2 Do you got to Do you have/have 
you got 3
 4 you’ve got to
5 Have Are 
6 must had to 
Unit 50
1 
1 A 2 F 3 C 4 D 5 B
2 
1 D needs to 2 G doesn’t need to 3 C needn’t 
have 4 F won’t need to 5 A didn’t need to
6 B needed to 7 H needn’t have 
3 
1 ’ll need to 2 needs to 3 didn’t need to 
4 don’t have 5 needn’t have 6 Do I need to
7 won’t need to 
Unit 51
1 
1 A 2 B 3 B 4 B 5 A 
2 
1 think 2 shouldn’t 3 ought to 4 shouldn’t 
5 should have 6 don’t think you should
7 ought not to 8 should
3 
1 had/’d better not touch 2 shouldn’t have 
ordered 3 ought to ask 4 must listen to
5 think I should do 
Unit 52
1 
1 can/are allowed to … can’t/aren’t allowed to E
2 can’t/aren’t allowed to … can/are allowed to A
3 can/are allowed to … can’t/aren’t allowed to B
4 can/are allowed to … can’t/aren’t allowed to D
2 
 1 (formal) May I, might 2 (formal) Might, 
can’t 3 (formal) won’t be allowed to, Will they be 
allowed to 4 (informal) were allowed to, could
3 
 1 can’t to smoke 
2 aren’t allowed to
3 couldn’t can’t 
4 

5 might can 
6 can’t won’t 
7 

8 I could was allowed to 
Unit 53
1 
1 Can you turn off the TV, please? / Can you please 
turn off the TV?
2 I could give you an extra lesson.
3 How about getting a pizza?
4 Shall I come back in ive minutes?
5 Would you put it in a bag, please? / Would you 
please put it in a bag?
2 
1 Shall 2 I’ll 3 Could you help 4 course 
5 Can 6 How about 7 Would you 8 Shall I 
3 
1 ’ll 2 Why 3 Shall 4 Would/Could 
5 could/would 6 course
Review
1 
 1 could 2 will be able to 3 managed to 
4 can 5 may not 6 might not 7 can’t
8 was able to 9 should 10 must 
2 
1 might not 2 was able to 3 could have 
4 can’t 5 must have 6 could 7 can’t have
8 should have 9 to be able 10 can
3 
1 C 2 E 3 A 4 F 5 D
4 
1 A 2 A, C 3 C 4 B 5 A, C 6 B 7 C 8 B 
5 
1 don’t need to 2 can 3 had to 4 managed 
to 5 have to 6 had to 7 was able to
8 needn’t 
6 
1 will have/need to (A) 2 needn’t have (F) 
3 mustn’t (H) 4 had to (B) 5 don’t have/need 
to/needn’t (G) 6 must (D) 7 won’t have/need
to (E)
7 
1 Could you 2 Why don’t you 3 Shall I 
4 aren’t allowed to 5 ought not to 6 ought to
7 you’d better 8 I’ll 
Z03_MGL_GBWK_INTGLB_4574_KEY.indd 381
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ANSWER KEY
382
8 
1 You aren’t allowed to/can’t/mustn’t play football in 
this park.
2 We don’t have to/don’t need to/needn’t buy batteries – 
they are included.
3 I think we should/ought to cook this in the microwave.
4 How about trying the keep it class tomorrow 
evening? 
5 She can’t be thirty … 
6 We’d better bring those plants in from the garden … 
7 Only adults are allowed to/can buy this product. 
8 I might/could have met someone famous! 
9 That looks interesting. Shall we go inside … 
10 This could/might be the chance you’ve been 
waiting for.
test 
1 C 2 B 3 A 4 A 5 B 6 A 7 B 8 C
9 B 10 A 11 C 12 C 13 C 14 B 15 A
16 B 17 C 18 A 19 A 20 B
Module 10
Unit 54
1 
1 E 2 F 3 D 4 A 5 B 6 G
2 
1 If you don’t cover it, someone might see it.
2 … a thief will confuse/might confuse you by talking 
to you if you allow him to.
3 … thieves will be able to get into your accounts if 
you don’t have proper security.
4 If it doesn’t have one, it won’t be secure enough.
5 … if you tell your PIN number to another 
person …, your credit card company might not