You can’t imagine what great trouble they have _________ the problem_______.
#95579
A
to solve; being talked about
B
solving; discussing
C
to solve; to talk about
D
solving; being discussed
推荐题目
They were busy ________ an experiment when I came.
#92445
A
doing
B
to be doing
C
with doing
D
to do
____in faraway northwest , this place has its beautiful fresh air .
#97768
A
Being located
B
Located
C
locating
D
To be located
I’ve always treasured the watch______ to me on my eighteenth birthday.
#91713
A
gives
B
given
C
to be given
D
being given