—Excuse me , Victor, but I have a favor to ask of you
---_____
| A．Ask , please | B．My please |
| C．Go ahead | D．Good for you |
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 |
a little money, Jane was able to buy her mother a lovely new watch.
| A．To save | B．Saving | C．Saved | D．Having saved |
From the dates on the gold coin, we know that it was made 500 years ago.
| A．marking | B．marked | C．to mark | D．to be marked |