I won’t tell the student the answer to the math problem until he ____on it for more than an hour.
#99288
A
has been working
B
will have worked
C
will have been working
D
had worked
推荐题目
With the development of socity,fewer and fewer old man is____ in the countryside.
#104915
A
abandoned
B
to abandon
C
abandoning
D
being abandoned
A vast area north of the Yangtze River ______by the first heavy SNOW of the new year，causing difficulties to the post-festival road transport.
#102259
A
were affected
B
was affected
C
had affected
D
has affected
By the time I got to the theatre, the play __________ for ten minutes.
#103201
A
had been on
B
had begun
C
have been on
D
has begun
I ________ him for a foreigner. Why didn’t you tell me earlier?
#103673
A
have taken
B
took
C
take
D
had taken