21.Listen __________ me carefully.
[B] Listen to me carefully.
22.This quiz is __________ prepositions.
[B] This quiz is for prepositions.
23.The man ran __________ the yard.
[C] The man ran across the yard.
24.He went home __________ midnight.
[B] He went home at midnight.
25.One __________ one she picked __________ the pearls.
[C] One by one she picked up the pearls.
26.He is a good lawyer __________ reputation. (有名)
[D] He is a good lawyer by reputation.
27.The young man went down the road __________ foot.
[C] The young man went down the road on foot.
28.She is __________ 5 feet tall.
[A] She is about 5 feet tall.
29.I don't know what you are getting __________.
[B] I don't know what you are getting to.
30. I'm interested __________ computer.
[B] I'm interested in computer.