TherewassoseriousamatterthatIh

There was so serious a matter that I had no choice but _________ the police.

A．called in

B．calling on

C．call for

D．to call in

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---May I remind you that Mr. White is waiting outside, Mrs. Green?
---Oh, I _________ all about it.

A．forget

B．had forgotten

C．forgot

D．was forgetting

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Sixty miles ________ in a single night, so they were exhausted.

A．were covered

B．have covered

C．was covered

D．has covered

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--- Had we been more careful, the accident might not have happened.
--- But we _____ at that time.

A．hadn’t

B．didn’t

C．weren’t

D．might not

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He will stop showing off，if no notice of him．

A．is taken

B．will be taken

C．taken

D．has taken

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—It’s said that“Traffic”is an exciting film．
— I it yet．I hope to see it soon．

A．didn’t see

B．hadn’t seen

C．don’t see

D．haven’t seen

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