They were surprised that a four-year-old boy should work out such a difficult problem ____ they themselves couldn’t.
| A．once | B．then | C．while | D．if |
– I cannot find my watch. I must have lost it.
-- Don’t worry. Hopefully it will _____ somewhere one day.
| A．get across | B．back out |
| C．put away | D．turn up |
After living in Shanghai for 20 years, the couple returned to the small village ______ they grew up.
| A．which | B．where | C．that | D．why |
I’m fed up with the noise—I _______ in the neighborhood of an airport for a year.
| A．have been working | B．am working |
| C．had worked | D．work |
Ann is very ______ about being fat, so you’d better not mention it.
| A．sensitive | B．hopeful | C．fierce | D．foolish |
–Do you know his number?
-No, I even have quite enough trouble______ my own.
| A．remember | B．to remember |
| C．remembered | D．remembering |