What’smatter with you ?—I have a cold. I want to go tobed early.

Must I go there right now, mum?—No, you ____. You can go there tomorrow.

I do my homework _____ ten o’clock every night.[ ]

The air in the countryside is , so many people from the city drive cars there on weekends.

She should have been informed of the meeting.—______，but she wouldn’t like to attend this meeting.