Jenny doesn"t know _________. [ ]A. what to do it B. how to do

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Jenny doesn"t know _________.      [     ]
A. what to do it
B. how to do
C. what to do
D. to do what

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举一反三

He is too young. He doesn"t know _____ by himself.        [     ]
A. what to do things
B. how to do things
C. how to do
D. what to be done

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I don"t know _____ by myself _____ I am alone at home .          [     ]
A. how to do , when
B. what to do , when
C. how to do things ,but
D. what to do things , because

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Don"t believe _____ he says. He"s just telling a lie.[ ]
A. how
B. when
C. what
D. where

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—Could you tell me how to repair my computer?
—I"m sorry, but I don"t know _____. [ ]
A. what to do
B. how to do
C. what to do it
D. how do it

题型：重庆市同步题难度：| 查看答案

—What are you looking for on the Internet?
—I"m trying to find out _____. [ ]
A. what is the difference between British English and American English
B. how much is this book
C. how to use the new vacuum

题型：期中题难度：| 查看答案