[单选题] They have to study a lot, _____?

1、[单选题]They did not find ________ to prepare for the worst conditions they might meet.

• A、worth their while
• B、it worthwhile
• C、it worth
• D、it worthy

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2、[单选题]We saw a new play at the theatre, _________ we had supper at a restaurant.

• A、after which
• B、which after
• C、then which
• D、and that after

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3、[单选题]I can't imagine anything ______ to him.

• A、happen
• B、happening
• C、to happen
• D、happened

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4、[单选题]Amelia Earhart, ____________ woman to make a solo flight across the Atlantic Ocean, was born in 1898.

• A、was the first
• B、she was the first
• C、the first who was a
• D、the first

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5、[单选题]I'm sure clean, ___________?

• A、am I
• B、isn't I
• C、aren't I
• D、am not

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