—I phoned you at 7:00 this morning. But there was no answer.—Well, maybe I _________ morning exercises at that time.
#39781
A
was doing
B
did
C
is doing
D
would do
推荐题目
Zhang Liang was a cook years ago, but he______  a model over the years.
#37441
A
has become
B
became
C
becomes
D
has been
If it __________ tomorrow, we’ll go to the Great Wall.
#39935
A
doesn’t rain
B
won’t rain
C
not rains
D
isn’t rain
 If I ______ free tomorrow, we ________to Beijing Zoo.
#38127
A
am; won’t go
B
is; will go
C
am not; will go
D
am not; won’t go
He’ll send us a message as soon as he ________ in Sichuan. 
#39495
A
is arriving
B
will arrive
C
arrived
D
arrives