He seemed as if he ___ his homework when his mother came in.
#103925
A
did
B
is to be doing
C
were doing
D
be doing
推荐题目
—Has Tom finished his task yet?—I’m not sure. But he _____ on it last week
#100481
A
was working
B
has been working
C
worked
D
had been working
—Do you know anyone in Paris?  —No. I'll make friends once______. 
#104324
A
I'msettled
B
Ihavesettled
C
I'llbesettled
D
I'msettling
I have been to Shanghai. I______ there last month.
#100143
A
go
B
went
C
has gone
D
will go
"The ground is wet." "Yes, didn't you know? ______for the last 20 minutes."
#104897
A
It's raining
B
It was raining
C
It's been raining
D
It has rained