Learning to write is learning to think. You don’t know things clearly ______

Learning to write is learning to think. You don’t know things clearly _______ you can write them down.

#56362

unless

since

whether

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Eddie was sleeping ______ Millie was watching TV.

#55964

while

when

after

People cut down too many trees, _____ the greenhouse effect becomes more and more serious.

#56516

because

although

We had to stay at home ______ it was raining hard.

#56188

because

because of

It’s not clever_______ others’ homework.

#57354

for you copy

for you to copy

of you to copy

of you copying

Although we are young, ______ we can still do something to help them.

#57162

but

and

however

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