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
    答案：
    1.正確答案：B答案解析：be engaged in：從事，忙于。
    2.正確答案：C答案解析：根據(jù)句意，應(yīng)該選擇“關(guān)閉”。句意：離開房間時一定記著把燈關(guān)掉。
    3.正確答案：B答案解析：譯文：大氣由上百英里高的氣體組成?！癶undred，thousand等數(shù)詞的復(fù)數(shù)形式+of短語”表示的是不確切的數(shù)量。
    4.正確答案：C答案解析：not only…but also…是固定搭配，意思是：不但……而且……。它需要遵循就近原則，謂語動詞應(yīng)與the old teacher一致，所以答案是C.
    5.正確答案：A答案解析：感嘆句分兩類：
    1：What + n.+主謂部分2：How + adj. / adv. / v.+主謂部分。本題屬第一種，但省略了bad，相當(dāng)于 What a bad time I had! 這是個習(xí)慣用語。
    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
    參考答案：
    6.正確答案：D答案解析：try to do：試圖做某事。
    7.正確答案：D答案解析：本題考查的是practice后面要跟動詞的ing形式。
    8.正確答案：C答案解析：先行詞是in that period of time，所以關(guān)系詞應(yīng)選擇when.
    9.正確答案：B答案解析：in which the above subjects are to be covered是report的定語從句。which指代先行詞report，in用于與report搭配。
    10.正確答案：B答案解析：本題考查的是定語從句的用法。先行詞是the reason;引導(dǎo)詞why表示原因。