7. I don't go ... anymore.
A) jogged B) jog C) jogging D) to jog
8. These engineers always ... in the office and ... English.
A) stayed/learn B) stay/learn C) stays/learns D) have stayed/learned
9. They urged us ... such accidents.
A) being prevented B) to prevent C) preventing D) to be preventing
10. When I went to school, they made us ... school uniform.
A) wear B) to wear C) worn D) wearing
11. If Samantha hadn't been so angry, she ... a little more diplomatically.
A) would have spoken B) spoke C) wouldn't have spoken D) would speak
12. I couldn't get in touch with her even though I’d tried all possible ... of communication.
A) thing B) tools C) ways D) means
13. I'd like … more milk in my coffee.
A) a little B) a little bit C) little D) a bit of
14. They ... breakfast at 7 and ... home at eight.
A) have/left B) had/left C) had/leave D) have/leaves
15. Alice never ... the car for short distances; she prefers walking.
A) travels B) takes C) flies D) catches
16. An opera singer ... a lot of high notes for a long period of time.
A) sustains B) would sustain C) will sustain D) has sustained
17. Today I feel ... than yesterday.
A) good B) worst C) well D) far better
18. There's ... any meat left. We must buy some when we go shopping.
A) likely B) hardly C) surely D) fairly
Many scientific advances are intensively used in the work of the police and the army. The US company, “Scientific Application and Research Associates" (SARA) Inc. has developed crowd-dispersal weapons for the US military that generate high-intensity sound waves. Sound levels of 120 to 130 decibels cause pain and blurred vision; above 140 decibels, sound produces profound discomfort throughout the body. Earplugs are no protection. These acoustic systems have a directed beam, projecting the sound in a narrow fan. They include high-intensity sound generators with power levels of up 60 kilowatts and are combustion driven, using a series of small explosions to create a noise or drive a siren or whistle.
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