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
— I don’t know if Aunt Li these “stay-home children”tomorrow morning.
— If I her, I would come earlier.
A．will come to take care of; am
B．come to look after; were
C．will come to take care of; were
D．comes to come up with; am
I didn't hear you because I the news on the radio.
A．listen to B．am listening to
C．listened to D．was listening to
