According to the rules and regulations, all payments _____ be made in cash in the shopping center.

--- Shall I tell John about it? --- No, you _____. I’ve told him already.

You'd better not ride the bicycle on snowy days; you ______ fall．

These shoes aren’t comfortable. You __________ wear them.

——Do you know where David is? I couldn’t find him anywhere. ——Well, he_______ gone far—his coat’s still here.