Thescientistdid＿＿experimentsto

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The scientist did ＿＿ experiments to test the new drug.

A．a series of

B．a good many of

C．a great many

D．a lots of

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A．is	B．are
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B．So curious were the couple

C．How curious the couple were

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A．isn't it	B．does it
C．doesn't it	D．is it

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