—Why not________your teacher for help when you can’t finish________the story by yourself．
| A．to ask：write |
| B．to ask；writing |
| C．ask；writing |
| D．asking；to write |
English is useful. Let’s try _______ best to learn it well.
A. us B. our C. ourselves
We can get _______ touch with David on the Internet.
A. in B. on C. to
—May I have _______ bill, please?
—Let me see. It’s￥150.
A. a B. the C. /
—______ kind girl Nancy is! —Yes, she is always ready to help others.
| A．What | B．What a | C．How | D．How a |
—Must I park my car behind the building?
—No, you _______. You _______ park it there.
A. mustn’t; may
B. may not; must
C. don’t have to; may