—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
The population of the world ____ still ____ now.
#39634
A
has; grown
B
is; growing
C
will; grow
D
is; grown
Would you please be quiet? The baby __________.
#36348
A
sleeps
B
is sleeping
C
has slept
D
will sleep
The guests were _________ in the front rows ________ to the president attentively.
#36726
A
seating; listened
B
seating; listening
C
seated; listened
D
seated; listening