________ is often the case with human beings, many animals sleep a lot when young, but sleep much less when they get older.

________ is often the case with human beings, many animals sleep a lot when young, but sleep much less when they get older.

#67127

Which

What

That

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You should be more confident in______ situation is challenging you.

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wherever

whenever

however

whatever

He finally bought several books by Tom, _____ is one.

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which of them

which of whose

of which this

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eat

will eat

ate

have eaten

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who

whom

of whom

whose

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buys; buys

buys; will buy

will buy; buys

will buy; will buy

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