—Whose book is this? —It’s______.

This book discusses the most recent events of space travel, it certainly is ____. A：up t

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This book __________ written ages ago－－－－－－－ it’s terribly out ofdate.A. must beB. shou

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Man: I like this TV set a lot.______ Woman: It s made in Germany.A．What make is it？B．Where

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This problem is very difficult to deal with. It’s really_______.A、convincingB、seriousC、t

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21－Is it OK to take this seat？ －Sorry. _______ A. here you are B. take it C. it’s taken D.

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Would you please pass me the book ________ cover is black? A) which B) whose C)

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This is the first draft of the book. Please feel perfectly free to ___ it.

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