Tony lent me the money，__________ that I'd do as much for him.
| A．hoping | B．to hope |
| C．hoped | D．having hoped |
Last year the number of students who graduated with a driving license reached 200,000, a(n) _______ of 40,000 per year.
| A．average | B．number | C．amount | D．quantity |
Experts think that _______ recently discovered painting may be _____Picasso.
| A．the;/ | B．a; the | C．a; / | D．the; a |
most parents care about is to provide the best education for their children.
| A．What | B．That | C．How | D．Whether |
--- May I smoke here?
--- If you , choose a seat in the smoking section.
| A．should | B．could | C．must | D．may |
The government has taken measures air quality.
| A．to improve | B．improved | C．being improved | D．to be improved |