Only when it is hungry ______ a human being.
| A．a lion will attack | B．a lion should attack |
| C．will a lion attack | D．should a lion attack |
You must not be governed by the opinions of others; ______, you should stick to your own view.
| A．besides | B．otherwise |
| C．instead | D．therefore |
I think camping out is _______ great fun, for we can get close to _______nature and learn something useful at the same time.
| A．不填; 不填 | B．不填; the |
| C．a; 不填 | D．a; the |
—What does the sign over there read?
—“No person smoke or carry a lighted cigarette in this area.”
| A．will | B．may |
| C．shall | D．must |
— Petrol prices have been climbing these years.
—Yes. It’s for this reason we’ve given up the plan to buy a new car.
| A．that | B．why | C．what | D．which |
The computer she had had ______ went wrong once again, so she had to buy a new one.
| A．to repair | B．repairing |
| C．repaired | D．been repaired |