—You look tired. —Yes. I _____ non-stop until twelve o’clock.

—You look tired.  —Yes. I _____ non-stop until twelve o’clock.

#103911

hasn’t been working

wasn’t working

was working

didn’t work

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If we _________ the earth, we must take action before it is too late.

#101505

will save

are to save

are about to save

are saving

It was the third time that Jack ______ to China.

#102552

has come

has , came

had came

had come

By the time I got to the theatre, the play __________ for ten minutes.

#103201

had been on

had begun

have been on

has begun

. ---Do you often attend meetings ?--- Yes, I ________ organizational meetings at the end of every month..

#103647

attend

will attend

am attending

have attended

It ________ nearly two weeks ______ I had received his letter.

#104191

is, that

was, that

is since

was, since

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