11.The young man promised to his parents, "I would never ( )again."

　　A.let you down

　　B.let you out

　　C.let you in

　　D.let you by

　　【參考答案】A。短語辨析。let down使…失望，如：He had promised to work harder，but he let me down.他答應(yīng)過我要努力的，可他讓我失望了。let out放走，釋放;let in允許進(jìn)入。letby沒有這個(gè)用法。

　　12.Mary regretted (　　)to John's birthday party last Sunday.

　　A.not going

　　B.not to go

　　C.not having been going

　　D.not to be going

　　【參考答案】A。regret后面要跟動名詞作賓語，動名詞的否定式是在動名詞之前直接加not，如：I regretted not having worn a thicker coat.我后悔沒有穿厚一點(diǎn)的外套。C不正確是因?yàn)闀r(shí)態(tài)錯(cuò)誤，去參加晚會是一個(gè)瞬間的動作，不能用完成進(jìn)行時(shí)。

　　13.Mary never tells anyone what she does for a (　　).

　　A.job

　　B.work

　　C.profession

　　D.living

　　【參考答案】D。同定搭配。livin9生計(jì)。make(earn)a livin9謀生。

　　14.William has cut his smoking (　　)to five cigarettes a day.

　　A.down

　　B.in

　　C.off

　　D.out

　　【參考答案】A。短語辨析。cut down削減，減少，如：The car industry cut down production.汽車制造業(yè)縮減了產(chǎn)量。cut in插嘴，打斷;cut off使分離，使隔離;cut out切去，割去。

　　15.I am very disappointed (　　)the results of the experiment.

　　A.from

　　B.for

　　C.to

　　D.with

　　【參考答案】D。短語搭配。be disappointed with sth.(sb-)對某事(某人)感到失望。

　　16.His few personal belongings made it possible for him to move from place to place (　　).

　　A.in ease

　　B.at ease

　　C.with ease

　　D.with easiness

　　【參考答案】C。短語辨析。with ease容易，不費(fèi)力，如：These tiny bananas could be consumed six at a time with ease.很容易一次吃下六只這些小香蕉。at ease自在，不拘束，如：The examiner soon put the candidates at ease.考官很快就使考生們的情緒放松了。

　　17. He talks as if he (　　)everything in the world.

　　A.knows

　　B.knew

　　C.had known

　　D.would have known

　　【參考答案】B。本題考查虛擬語氣的用法。在as if引導(dǎo)的狀語從句中，要用虛擬語氣。本句是對現(xiàn)在事實(shí)的虛擬，要用過去時(shí)。

　　18.The doctor advised that Mr.Malan (　　)an operation right away so as to save his life.

　　A.had

　　B.would have

　　C.have

　　D.was going to have

　　【參考答案】C。本題考查虛擬語氣。動詞advise后面應(yīng)該接虛擬語氣。

　　19.Television makes us better (　　)than ever before.

　　A,inform

　　B.informing

　　C.informed

　　D.to be informed

　　【參考答案】C。本題考查分詞的用法。分詞可以作賓語補(bǔ)足語，因?yàn)橘e語與分詞之間是被動關(guān)系，所以要用過去分詞。

　　20.You could have done much better yesterday.Why (　　)?

　　A.didn't you

　　B.couldn't you

　　C.hadn't you

　　D.shouldn't you

　　【參考答案】A。本題考查動詞時(shí)態(tài)的用法。第一個(gè)句子用了虛擬語氣，表示與過去事實(shí)相反，所以后面的特殊疑問句應(yīng)該使用正常的語氣。這里應(yīng)用一般過去時(shí)。