Hurry up, ______ you’ll be late for school.
| A．but | B．and | C．/ | D．or |
You _______ walk across the road. It’s dangerous.
| A．may not |
| B．don’t have to |
| C．mustn’t |
| D．needn’t |
You’d better _______ too much meat. You are much too fat.
| A．not eat | B．eat |
| C．not to eat | D．don’t eat |
You should _______ the doctor’s advice and _______ the medicine on time.
| A．follow; eat | B．take; eat |
| C．follow; take | D．eat; take |
_______ necessary for us _______ our environment clean and tidy.
| A．This is; keep |
| B．That’s; to keep |
| C．It’s; to keep |
| D．It’s; keep |
She was afraid of __________SARS because it was dangerous.
| A．catch | B．catches |
| C．caught | D．catching |