—May I go swimming this afternoon? — I'm afraid not ______

—May I go swimming this afternoon? — I'm afraid not _______ you have finished your homework.

#55374

unless

because

but

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—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed________12 o’clock last night.

#57218

until

when

though

unless

Money is important ____________ it’s not the most important thing.

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and

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---You look very healthy. ________do you exercise? -----I exercise three times a week.

#56267

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 Although it was very cold,            he went out without an overcoat.

#55676

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—You won’t pass the oral English test ______ you practise speaking more．—I am sure that I will be the best．Don’t worry，mum．

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