While Mary ___ a letter, the children were playing outside.
#39841
A
wrote
B
writes
C
is writing
D
was writing
推荐题目
—Where is Mike?  —He’s _______ the pool.
#40102
A
swim at
B
is swimming at
C
swimming at
D
swim
--- How long have they ______ France?  --- For about half a year.
#42173
A
been to
B
gone to
C
gone in
D
been in
We'll go on a field trip if it _______ this weekend.
#40236
A
won't rain
B
isn't raining
C
doesn't rain
D
will rain
he girl sitting next to me on the plane was very nervous, for she            before.
#36660
A
hasn’t flown
B
hadn’t flown
C
didn’t fly
D
wasn’t flying
Tom wants to be a singer and he_____ singing lessons to do it.
#39114
A
took
B
has taken
C
is taking
D
was taking.