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Scientists say it may be five or six years __________it is possible to test this medicine on human patients.

A．since

B．after

C．before

D．when

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The child dreamed that he had once lived in a _______ house in the forest.

A．wooden pretty little	B．little pretty wooden
C．pretty little wooden	D．wooden little pretty

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The yellow house ____ windows face south is the place ____ I spent my childhood.

A．whose, that

B．whose, where

C．which, where

D．where, which

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He told me a piece of news, _____ terrible.

A．I think it is

B．I think which is

C．which I think it is

D．which I think is

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A．inviting

B．being invited

C．invited

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The wallet ________ several days ago was found ________ in the rubbish.

A．stealing; lie

B．stolen; lying

C．stealing; lain

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