Question

英语大神们，帮帮我 加急得

Answer 1

1. Mr.Smith can't be forty years old.

2. I can't have been dreaming.

3. We can't make up our minds, can we?

4. Liz can recognize that woman.

5. You'd better not take your teacher's advice.

6. We may not go abroad.

7. It's cheaper to travel by train, isn't it?

8. Does it take a long time to travel by sea?

9. What was Ann telling Gary?

10. He can't know anything about that.

望采纳呀，谢谢~

Answer 2

这是考的情态动词的用法~must改成否定要用can't~你去翻翻你的参考书，肯定有这方面的讲解~亲~自己去找答案哦~记得更加清楚~