问题
They haven’t finished their work. Maybe they have some trouble ______ it. [ ]
A: on
B: at
C: in
D:with
B: at
C: in
D:with
正确答案是:
同类题型
Do you know the boy _____ father is a bus driver?—Yes, he is my friend.[ ]
We will wait until everyone ________ back.
Excuse me, Which is the way to the museum?―Sorry, I don’t know. This is my ________ time here.
Attention!_______ in the form right now,making sure that every detail supplied is accurate.