问题
When they walked along the river，they suddenly heard somebody ________ for help．
A:by
B:through
C:across
D:in;
B:through
C:across
D:in;
正确答案是：
同类题型
Peter was so excited ______ he received an invitation from his friend to visit Chongqing.[ ]
How do you find your new classmates—Most of them are kind，but________is so good to me as Bruce．
____ a broken chair , the room is empty
been living in the United States fortwenty years,but seldom _______ so lonely as now.
His strength ran ________ after he covered that long distance.