10. — How old are you, madam?
— If you _______ know, I’m twice my son’s age.
| A．can | B．must | C．may | D．Should |
You’ll find taxis waiting at the bus station ______ you can hire to reach your host family.
| A．which | B．where | C．when | D．as |
It’s no use ______ without taking any action.
| A．to complain | B．complaining | C．being complained | D．to be complained |
“I’ve told you a million times --- _______ my belongings alone!” shouted Paul angrily.
| A．keep | B．leave | C．set | D．lay |
You’ve done so much work that you’re ______ to pass the exam.
| A．exposed | B．used | C．devoted | D．bound |
He has _____ that sometimes he can’t see an inch ahead.
| A．so poor eyesight | B．such poor eyesight |
| C．such a poor eyesight | D．so poor an eyesight |