He doesn"t know _____. [ ]A. how to wearB. what to wear C. where to wear

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He doesn"t know _____.

[ ]

A. how to wear
B. what to wear
C. where to wear

答案

举一反三

—Could you tell me _____? I must find him.
—Sorry. I don;t know. But he was here just now.

[ ]

A. where Tom was
B. where has Tom gone
C. where Tom is

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Can you tell me when _____?

[ ]

A. did tea invented
B. tea invented
C. tea was invented

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What _____ is the most useful invention?

[ ]

A. you think
B. do you think
C. you think

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Can you tell me ______?

[ ]

A. how much does it cost
B. how much is it
C. how much it costs

题型：同步题难度：| 查看答案

Somebody rang my doorbell just now, but I didn"t know _____.

[ ]

A. who were they
B. who they were
C. who it was

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