What does Lexicology, a brunch of linguistics study?

What is the general tendency with the English vocabulary at the modern stage of its history?

1. 
   *To increase the total number of its meanings.
   
2. 
   To involve the appearance of its new meanings.
   
3. 
   To develop the semantic structure of a word.
   
4. 
   To narrow the total number of its meanings.
   
5. 
   To add new words to the English vocabulary.
   

16. 
    What are syntagmatic relationships based on?
    

1. 
   They are based on the basis of its vocabulary.
   
2. 
   *They are based on the linear character of speech,
   
3. 
   They are based on the basis of its grammar structure.
   
4. 
   They are based on the basis of its morphological structure.
   
5. 
   They are based on the basis of its typical meaning.
   

Key:

1 b	11 c	21 e
2 a	12 a	22 c
3 c	13 a	23 b
4 e	14 d	24 d
5 d	15 d	25 c
6 d	16 d	26 b
7d	17 b	27 e
8 a	18e	28 d
9 c	19 c	29 a
lOd	20 c	30 b

Key:

1 b	11 c	21 e
2 a	12 a	22 c
3 c	13 a	23 b
4 e	14 d	24 d
5 d	15 d	25 c
6d	16 d	26 b
7d	17 b	27 e
8 a	18 e	28 d
9 c	19 c	29 a
lOd	20 c	30 b

Key:

1 b	11 c	21 e
2 a	12 a	22 c
3 c	13 a	23 b
4 e	14 d	24 d
5 d	15 d	25 c
6d	16 d	26 b
7d	17b	27 e
8 a	18e	28 d
9 c	19 c	29 a
10 d	20 c	30 b

Key:

1 b	11 c	21 e
2 a	12 a	22 c
3 c	13 a	23 b
4 e	14 d	24 d
5 d	15 d	25 c
6d	16 d	26 b
7d	17 b	27 e
8 a	18e	28 d
9 c	19 c	29 a
lOd	20 c	30 b