We were about to go out for a walk _____

We were about to go out for a walk ______ it began to rain.

#31592

while

before

when

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This college allows students to develop their own interests, to ______　extent they wished．

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whoever

whatever

however

whenever

Bring the plants into a warm room _____ they will soon open.

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and

but

for

There is no doubt ______ they all passed the examination.

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which

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whether

David knocked at the door for nearly half an hour______Mary opened it, unwilling.

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when

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 _______ he said is true.

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What

That

Which

Whether

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