________ happens in the world makes us happy and sad by turns.

________ happens in the world makes us happy and sad by turns.

#80286

That

What

Which

Whether

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You'd better not leave the medicine ________ kids can get at it.

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even if

which

where

so that

        a strange plant! I've never seen it before.

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Which

What

How

Whether

．How long is it ______ we last spent the holiday in the country together?

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until

before

since

that

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

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and

but

nor

What the boy enjoys _____ to have a room of his own.

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being

to be

are