Ittookhimtofindthekeytothedraw

It took him ____ to find the key to the drawer.

A．one and half hours	B．one and a half hours
C．one and a half hour	D．one and half hour

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A few students don’t know ________ they should deal with stress before________ an exam.

A．how; take	B．what; taking
C．how; taking	D．what; take

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—How much difficulty did you have this problem?
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A．to solve; No	B．solving; None
C．solving; Nothing	D．to solve; Neither

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—You’re right. We can’t be _________ careful while crossing the street.

A．so

B．very

C．too

D．more

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—Have you _________ the invitation of Lily’s birthday party?
—Yes, but I won’t _________ it. I don’t have any time on that day.

A．accepted; receive	B．accepted; accept
C．rreceived; receive	D．received; accept

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— Must I finish the work now?
—No, you __________. You __________ do it this evening.

A．mustn’t; can	B．needn’t; may
C．can’t; must	D．needn’t; must

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