__in the regulations that you should not tell other people the password of your e-mail account.
it's cold here. You’d better __ your clothes. A. not put on B. take off C to put on D. not take off
What you said just now sounded ___ a good idea.
---How long will Tom stay here? ---____.
Hangzhou is one of the most beautiful cities ___ I have ever visited.
___ lovely day they had!