Nooneknowsexactlywhenourancest

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No one knows exactly when our ancestors started talking, but new evidence suggests that____ might have happened a long time ago.

A．which

B．what

C．it

D．they

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— Oh, it’s you. I ______ you.
— I have just had my hair cut, and I’m wearing new glasses.

A．don’t recognize	B．haven’t recognized
C．didn’t recognize	D．hadn’t recognized

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—How come a simple meal like this costs so much?
—We have ______ in your bill the cost of the cup you broke just now.

A．added

B．contained

C．charged

D．included

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— It's a long time since my mother worked here in the car factory.
— _____?

A．Does she still enjoy working here	B．Does she wish to change a new job
C．What kind of job does she do here	D．Where is she working at present

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The managers discussed the plan that they would like to see _____ next year.

A．carry out

B．carrying out

C．carried out

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Don't scold him; even an experienced engineer _____ make such a mistake after all.

A．must

B．can

C．should

D．dare

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