单项选择1．The houses across the street are _______ ,but they wer

单项选择
1．The houses across the street are _______ , but they were in good condition a few years ago.
A. in rows B. in ruins C. in number D. in detail
答案选 B. in ruins 成为废墟
可以根据but they were in good condition a few years ago.但是他们在几年前还很好,这里可以判断出只有B合适
A. in rows 一排排地；排列着
C. in number 总共；在数字上
D. in detail 详细地
2. The boy was so careful that he ________ the street and broke his leg.
A. fell down B. fell over C. fell off D. fell onto
答案选 C. fell off 从.跌落
A. fell down 倒下；感到闷闷不乐
B. fell over 落在
D. fell on to 落在

B 被破坏了
A摔倒

B废墟的意思。
D摔倒，不能用fall down ，down是副词不能接名词，所以必须在后面加on/onto .down也可以去掉。

1 B----被破坏了
2 D -----摔倒在街上
1 请你把careful换成careless
2 C C绝对是错误的答案。