句子纠错

26) 天然湖泊正在干涸；它 must not had 下雨。

1. must not have
2. must not has
3. must have not
4. was not

27) 如果你现在 not start 学习，你会失败

1. does not start
2. do not start
3. have not start
4. has not start

28) 所有针对他的腐败指控 leveled on 被发现毫无根据。

1. level against
2. leveled with
3. leveled over
4. leveled against

29) 他 as tall if not 比他哥哥高。

1. as tall as if not
2. as tall if not
3. not so tall but as
4. 以上都不是

30) 几天来，新老师 across the heads 学生们。

1. on the heads
2. over the heads
3. over the head
4. through the heads of