You ____ swim here. It is said that sharks(鲨鱼) have beenseen.

The young girl sitting next to me on theplane was very nervous.She ______before.

What’s wrong with you, Darling?—I’m _____a fever. I think I am dying.

You look well. The air and the sea food in Sanya must_______ you, I suppose.

What should we do before we use the blender —I think we must read __________.