from space, the earth looks like a blue ball.A．To seeB．SeeingC．SeeD．Seen——青夏教育精英家教网——

___________ from space, the earth looks like a blue ball.

—Do you know the nearest way to the science museum?
—Sorry, I’m a stranger. This is the first time I _________ here.

___How time flies!It’s already twelve o’clock.
___ Oh,really? I ______ it at all.

A．don’t realize	B．Didn’t realize
C．haven’t realized	D．hadn’t realized

—What bad weather!
—Yes. If it _______raining, the fields will be covered with water soon.

My mother was cooking while I____ the radio.

A．listened to

B．have listened to

C．was listening to

D．is listening to

The geography teacher told us the earth________ bigger than the moon.

We __________ 1000 English words since we __________ to learn English.

A．learned; begin	B．have learning; began
C．have learn; begun	D．have been learning; began

—What were you doing when the UFO arrived?— I with my dog on the street.

B．was walking

D．have walked

—What will Jack do on vacation?
— He’ll go to Disneyland if he _________ enough time.

There __________ some children in the painting room. They are studying painting.

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