---Does my question sound ________ enough?---I don’t think so. You can ask more ________ by using “could” instead of “can”.
I have many hobbies, _______collecting stamps, playing football and so on.
I wonder if he tonight. If he, I’ll let you know.
- The air pollution is terrible. - It will be worse ________ we take action to protect the environment.
______ he talked with her for a long time, he failed to convince(说服)her.
Mr Smith usually reads a newspaperhe’s waiting for the bus.