If you don't study hard,you will____ other students.A.fall behind B.fall after C.fall off 选择哪一个 并解释下每个词组的意思和区别.

问题描述:

If you don't study hard,you will____ other students.
A.fall behind B.fall after C.fall off
选择哪一个 并解释下每个词组的意思和区别.

A
fall behind 落在后面
fall after 没有这个词组
fall off 跌落、减少

C 应该是C 一般将来时

答案A
fall behind sb.落后于某人
fall off sth.从...摔下来eg.He fell off the tree and broke his leg.
fall after 不是固定短语