—— What are you doing?   —— I _____  a letter to my pen pal.
#41497
A
write
B
am writing
C
writes
D
am write
推荐题目
 We only heard about the meeting yesterday, so it ______ yet.
#42760
A
didn’t prepare
B
hasn’t prepared
C
wasn’t prepared
D
hasn’t been prepared
—I________ you for a long time.  --Oh, I_______ in Beijing. I’ve just come back.
#37537
A
haven’t seen; am
B
didn’t see; will be
C
haven’t seen; was
D
haven’t seen; have been
—Shall we meet at the station at 8 a.m.?—In fact, we __________. The train ________ until 10 a.m.
#39544
A
mustn’t, doesn’t leave
B
mustn’t, leaves
C
needn’t, won’t leave
D
needn’t, will leave
— Tommy, do you know if Frank ______ to the zoo this Sunday if it _______?— Sorry, I have no idea. 
#41968
A
will go; is fine
B
goes; is fine
C
will go; is going to be fine
D
goes; will be fine
The train _______. Please get ready to get off.
#42532
A
arrives
B
arrived
C
is arriving
D
to arrive