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Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.

A．since

B．before

C．after

D．when

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-Sorry,you can not -___you have not recovered from the knee injuyy.

A．unitil

B．before

C．since

D．unless

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Sales director is a position______commuincation ability is just as importance as sales

A．which

B．that

C．when

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We’re having a meeting in half an hour.The decision______at the meeting will affect the future of our company.

A．to be made	B．being made
C．made	D．having been made

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Food stupplies in the flood-stricken area______.We must act immediately before there’s left.

A．have run out	B．are running out
C．have been run out	D．are being run out

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-The Modern Art Exhibition in the City Museum has been cancelled.
-Oh,no!______.

A．It’s a pity	B．Tt doesn’t matter
C．I knew it already	D．It’s not interesting at all

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