I won’t tell the student the answer to the math problem until he ______ on it for more than an hour.
#104700
A
has been working
B
will have worked
C
will have been working
D
had worked
推荐题目
Lady Wang _____as a secretary for five years in the company, and now she is a general manager of it.
#100066
A
has served
B
serves
C
had been serving
D
served
Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
#101847
A
has been broadcast
B
is being broadcast
C
is broadcast
D
is broadcasting
Last night’s TV news said that by then exact evidence for the missing plane MH370 .
#99339
A
had not been found
B
had not found
C
has not been found
D
has not found
Every passenger boarding the Titanic filled with confidence that the ship was unsinkable.
#101216
A
was
B
had been
C
has been
D
is
They became friends again that day.Until then,they_____to each other for nearly two years.
#104068
A
didn’t speak
B
hadn’t spoken
C
haven’t spoken
D
haven’t been speaking