-If that’s not yours, _______?-Probably John’s.

-If that’s not yours, _______?-Probably John’s.A.whose else can it be B.whose

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_______ no exercise-book, he had to write on a piece of pap

_______ no exercise-book, he had to write on a piece of paper.A.There was B.The

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We never dared to ask him a question, _______?

We never dared to ask him a question, _______?A.did we B.didn’t we C.dared we D

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_______ come into leaf or bloom is obviously a sign of spri

_______ come into leaf or bloom is obviously a sign of spring.A.Trees B.The tre

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种群的基本特征有哪些方面?

种群的基本特征有哪些方面?

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