11.He was busily engaged ______ writing letters.
A. on B. in C. with D. by
12.Do remember to ______ the light when you leave the room.
A. turn up B. turn on C. turn off D. turn down
13.The atmosphere consists of an ocean of gases ______ miles high.
A. hundreds B. hundreds of C. of hundreds D. of hundreds of
14.Not only the students but also the old teacher ______ been changed.
A. was B. were C. has D. have
15.—— ________ I had!
—— You really suffered a lot.
A. What a time B. What time C. How a time D. how time
答案：
11.正確答案：B答案解析：be engaged in：從事，忙于。
12.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(shí)一定記著把燈關(guān)掉。
13.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。
14.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(dòng)詞應(yīng)與the old teacher一致，所以答案是C.
15.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(gè)習(xí)慣用語。
A. on B. in C. with D. by
12.Do remember to ______ the light when you leave the room.
A. turn up B. turn on C. turn off D. turn down
13.The atmosphere consists of an ocean of gases ______ miles high.
A. hundreds B. hundreds of C. of hundreds D. of hundreds of
14.Not only the students but also the old teacher ______ been changed.
A. was B. were C. has D. have
15.—— ________ I had!
—— You really suffered a lot.
A. What a time B. What time C. How a time D. how time
答案：
11.正確答案：B答案解析：be engaged in：從事，忙于。
12.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(shí)一定記著把燈關(guān)掉。
13.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。
14.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(dòng)詞應(yīng)與the old teacher一致，所以答案是C.
15.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(gè)習(xí)慣用語。