—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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I enjoy the popular dance “hip--hop” , but ______my father _______ my mother like it .

#58445

both; and

not only; but also

either; or

neither; nor

Many people shop on line, ________ years ago, they bought things only from stores.

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and

but

  I   didn’t   know  anything  about it ______my  father told me .

#55534

until

because

after

and

Finally, tired          happy, we took the subway back home.

#58050

and

but

We must do something to protect the earth, ____we will lose our home.

#56833

and

but

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