I don't know .
You can go and ask Mary.( )
when does the train arrive
if she has come or not
what I should buy for my sister
The kite in China more than 2,000 years ago.( )
A.inventsB.invented
C.is inventedD.was invented
﹣What's that noise,Sam?
﹣My little brother with his toy car now.( )
A.will playB.is playingC.playsD.played
We each other since I came to Beijing, but we send emails very often.( )
A.don't seeB.didn't see
C.won't seeD.haven't seen
I on the computer when Frank called me last night.( )
A.workB.will work
C.was workingD.am working
If you take this train, you in Shanghai in five hours.( )
A.arriveB.will arrive
C.arrivedD.have arrived