问题

The policeman is helping the old woman__________ a heavy bag on her back.
A:in
B:with
C:at
D:on
B:with
C:at
D:on
正确答案是:
同类题型
We don’t go to school __________________________.
Tom worked very hard at all his lessons. , he became the top student in his class.
The people in theearthquake-struck area didn’t____despite the heavy loss oflives and property.[ ]
He said,“What’s the matter?”→He asked .
To our ______, the result of the experiment is much better than we expected.