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
The building which _____ now will be our science laboratory.
#103024
A
is being built
B
will be built
C
is built
D
has been built
His sister left home in 1998, and _______ever since.
#99521
A
has not heard from
B
had not heard from
C
has not been heard of
D
had not been heard of
--- You seem to be familiar with London.--- I ______ there for three years. It’s great to be back.
#99805
A
lived
B
had lived
C
have lived
D
live
The couple decided to adopt the child whose parents ________in an accident.
#100975
A
had been killed
B
are killed
C
had killed
D
killed
—-Is it possible for us to meet at ten o’clock tomorrow morning?—-Sorry, it is certainly not. I an important meeting then.
#102707
A
attend
B
am attending
C
will attend
D
will be attending