—What were you doing this time yesterday?
—I ____on the grass and drawing a picture.
A．sit B．sat
C．am sitting D．was sitting
Although Bill isn’t rich enough, he often ______ money to the poor.
A．will give B．was giving
C．gives D．gave
Great changes _________ in Tongren in the past five years.
A．have happened B．have taken place
C．have been happened D．have been taken place
My pen pal said he would write to me, but I _____ any letters from him so far.
A．won’t receive B．haven’t received
C．hadn’t received D．didn’t receive
—Lin Kai, hand in your homework, please.
—Oh, sorry. I ______ it at home this morning.
A．was leaving B．has left
C．will leave D．left
He went into his room, the light and began to work.
A．has turned on B．turned off
C．turned on D．has turned off
