___ the afternoon of May, we visited the old man. A. On B. At C. In 2.Many people work ___ the day and sleep ___ night. A. on ; at B. in ; in C. in ; at 3.He speaks Japanese best ____ the boy students. A. between B. with C. among 4.A wolf ___ a sheep skin is our dangerous enemy. A. with B. in C. on 5.Joan hopes to come back ___ three days. A. afterB. forC. in 6.They sent the letter to me ___ mistake. A. by B. forC. with 7.He left home ___ a cold winter evening. A. atB. onC. in 8.Shanghai is ____ the east of China. A. inB. on C. to 9.____ my father ’s help, I have finished my composition. A. UnderB. On C. with 10.He ’s very strict ____ himself and he’s very strict ___ his work. A. with ; in B. in ; withC. with ; with 11.I really can ’t agree ____ you. A. to B. on C. with 12.The shop won ’t open ___ nine in the morning. A. until B. atC. during 13.How about ___ the flowers now? A. watering B. are watering C. watered 14.She spent all his money ___ books. A. in B. with C. on 15.They are talking ___ low voices. A. withB. in C. on 16.It ’s very kind ___ you to help us. A. forB. toC. of 17.What will you have ___ breakfast this morning? A. with B. forC. by 18.A plane is flying ____ the city. A. onB. overC. above 19.You are free to speak ___ the meeting. A. at B. in C. on 20.Mr. Green will stay in China___ Friday. A. to B. on C. till 21.It ’s wrong to play jokes ___ other people. A. on B. ofC. with 22.Which color do you like? I prefer blue ___ red. A. for B. asC. to 23.The student will give us a talk ___ how to use our spare time. A. forB. onC. in 24.I paid two hundred yuan ___ that kind of bicycle. A. in B. forC. on 25.The doctor is very kind ___ his patients A. to B. on C. at 26.We can ’t live ___ air. A. in B. with C. without 27.The child was afraid___ the strange sound. A. atB. forC. of 28.He was very angry ___ her for being late. A. for B. with C. at 29.What do you think __ _ the play? A. about B. likeC. of 30.I think it ’s the right way to work out the problem, but I am not sure _____ it. A. do B. aboutC. of