The scientists ________ on the new medicine for two years. They will succeed in no time.
#38384
A
work
B
are working
C
have worked
D
will work
推荐题目
–Tom, you didn’t come to my party last night?– I ________, but my mom hurt her back and I had to look after her.
#41573
A
had to
B
didn’t
C
wouldn’t
D
was going to
Linda, with her parents，_______ the Wolf Hill, and they will be back this afternoon.
#42030
A
has gone to
B
have gone to
C
has been to
D
have been to
There _______ two basketball matches on TV this evening.
#42009
A
are going to be
B
is going to
C
will have
D
are going to have