What a mess(杂乱)! Tony, you should ___________ your things to keep the room clean.—OK, Mum! I’ll do it at once.

You cannot be too careful. Which of the following sentences doesn’t have the same meaning of the underlined sentence? _____

Shall I turn the heating on?—Sure, it’s so cold in here. I’m freezing.

Beijing is ____ largest city in China.

Everyone ____ to know how ________ to the shopping mall ?