I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.

I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.

#79865

and

but

nor

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 —How was that? —I was chatting on line ______ the power went out.

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because

while

when

________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.

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Having explained

Having been explained

Though it was explained

It was explained

— What is that building?— _____ the garden equipment is stored.

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There is in which

That is where

The building that

That I got

_________ caused the accident is still a mystery.

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How

What

That

Where

Mother told her son that it would be half a year ______ she could come back from American.

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since

before

that

when

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