英语同义句替换 2题

题目

英语同义句替换 2题
1.He didn't notice what was happening in front of him.
He _____ _____ _____ _____ what was happening before him.
2.If we divide 15 by 3,we can get 5.
15 _____ _____ 3 —————————— 5.
第二题错了
2.He heard someone knocking at the door.
He heard some _____ at the door.

答案

1 didn't pay attention to
2 divided by
改题目了吗?
2 knocks (敲门声)