— Do you know ____________?
—At 9:00 tomorrow morning.
A.when the video meeting began
B.when did the video meeting begin
C.when the video meeting will begin
D.when will the video meeting begin
The kite ________ in China more than 2000 years ago.
A.invents B.invented C.is invented D.was invented
—What’s that noise, Sam?
—My little brother _________ with his toy car now.
A.will play B.is playing C.plays D.played
We ________ each other since I came to Beijing, but we send emails very often.
A.don't see B.didn't see C.won't see D.haven't seen
I ___________ on the computer when Frank called me last night.
A.work B.will work C.was working D.am working
If you take this train, you _________ in Shanghai in five hours.
A.arrive B.will arrive C.arrived D.have arrived
