–What was your brother doing at this time yesterday?–He was reading a magazine _______

–What was your brother doing at this time yesterday?–He was reading a magazine ________ I was writing an e-mail at home.

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as soon as

after

until

while

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I won’t pass the exam ______I work hard.

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whenever

because

unless

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and

though

but

We didn’t know the good news ______ he told us.

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after

because

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 Study hard, _        _ you will pass the exam.

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but

and

I was surfing the Internet       my brother was doing his homework.

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after

because

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