-What's up? You look worried.Well,I_____on the problem for 5 hours but I haven't got a single clue.
#100541
A
have worked
B
worked
C
will work
D
have been working
推荐题目
Had it been possible, I would have gone to attend Monica in the hospital, but I fully occupied last month.
#101333
A
was
B
am
C
had been
D
have been
—Remember the first time we met?—Sure．You__________ the novel Pride and Prejudice in the library．
#101268
A
had borrowed
B
have borrowed
C
were borrowing
D
borrowed
According to the artists，the painting ________ to go for at least a million dollars.
#99444
A
expects
B
is expecting
C
will expect
D
is expected
When and where to build the new factory ____yet.
#102379
A
is not decided
B
are not decided
C
has not decided
D
have not decided
Yesterday, when I went to his office, he ______ online for some information. I think it will be an interesting lecture.
#102100
A
searched
B
was searching
C
would search
D
has searched