I don"t know_____.[ ]A. how to say or do B. what to say and to doC. what

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I don"t know_____.[     ]
A. how to say or do
B. what to say and to do
C. what to say or do
D. how to say and to do

答案

举一反三

I don"t know_________ cat this is.  [     ]
A. who
B. whom
C. when
D. whose

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I don"t know __________ book this is.  [     ]
A. who
B. whom
C. who"s
D. whose

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—Excuse me. Could you tell me____ later on?
—Wait a minute. It’s coming in ten minutes.[ ]
A. if the next train arrives.
B. if the next train will arrive
C. when the next train arrives
D. when will the next train arrive

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-----How is the weather tomorrow?
-----I don"t know if it         tomorrow.
----Well, if it         , I won"t go for a picnic with you.        [     ]
A. will rain; will rain
B. will rain ;rains
C. rains ;will rain
D. rains; rains

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Could you tell me __________?[ ]
A. where do you live
B. who you are waiting for
C. who were you waiting for
D. where you live in

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