They all appeared ___ this song before.A．to learnB．to have learnedC．to not have

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They all appeared ___ this song before.

A．to learn

B．to have learned

C．to not have learned

D．not learning from

答案

解析

此处的appeared意为:看来,后可接不定式.根据后面的before得知,这里要用被动结构 to be learned.

举一反三

To my surprise, he turned up in the room without ___.

A．noticed

B．being noticed

C．noticing

D．to be noticed

题型：不详难度：| 查看答案

Do you know __ to deal with this kind of person?
A, how B. which C.what D. that

题型：不详难度：| 查看答案

No one is allowed ____ the room in the daytime..

A．to be entered

B．to enter

C．entering

D．enter

题型：不详难度：| 查看答案

Whenever you are in trouble ,don’t hesitate _____us for help.

A．in asking

B．with asking

C．to ask

D．to asking

题型：不详难度：| 查看答案

Can you imagine_______such a mean person?

A．she marrying	B．her to marry
C．her marrying	D．that her marrying

题型：不详难度：| 查看答案