They spent all their spare time __________their spare money

They spent all their spare time __________their spare money, on their experimen

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We hadn't met for 20 years, but I recognized her __________

We hadn't met for 20 years, but I recognized her __________ I saw her.A.for the

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第6题__________

第6题__________A.Wushu schools have developed quickly. B.Wushu has a very deep bas

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We felt very sad when we heard the news that the __________

We felt very sad when we heard the news that the __________ manager was killed

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You will be late __________. you leave immediately.

You will be late __________. you leave immediately.A.unless B.until C.if D.or

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