It’ssuggestedbyexpertsthatteen

It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.

A．spend

B．to spend

C．spent

D．have spent

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A．that, sleep

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A．having been built	B．to be built
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A．way

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A．gave off

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A．annoying

B．annoyed

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