1.He was busily engaged ______ writing letters.

　　A. on 　B. in 　C. with 　D. by

　　2.Do remember to ______ the light when you leave the room.

　　A. turn up 　B. turn on 　C. turn off 　D. turn down

　　3.The atmosphere consists of an ocean of gases ______ miles high.

　　A. hundreds 　B. hundreds of 　C. of hundreds 　D. of hundreds of

　　4.Not only the students but also the old teacher ______ been changed.

　　A. was 　B. were 　C. has 　D. have

　　5.-- ________ I had!

　　-- You really suffered a lot.

　　A. What a time 　B. What time 　C. How a time 　D. how time

　　6.The advertisements are trying ________ people to buy things they don‘t really need.

　　A. persuade 　B. persuading 　C. be persuading 　D. to persuade

　　7.Practice ________ English every day.

　　A. speak 　B. to speak 　C. speaks 　D. speaking

　　8.The discount houses were first established in that period of time ________ people‘s purchasing power was low.

　　A. which 　B. that 　C. when 　D. where

　　9.Please write a report ________ the above subjects are to be covered.

　　A. which 　B. in which 　C. that 　D. in thatwww.examw.com

　　10.The reason ________ I‘m writing is to ask for your permission to translate your latest novel into 　Chinese.

　　A. because 　B. why 　C. for 　D. as