---I have looked for my keys everywhere, but I can’t find them.
---Sorry to hear that. You _____ them somewhere.
| A．must lose | B．should lose |
| C．must have lost | D．should have lost |
— Wow, Class 13 has got the champion in the school sports meeting.
—_________ they look so excited.
| A．No doubt | B．No wonder |
| C．That’s because | D．It’s natural |
Tina, ________ for months to find a job as a waitress, finally worked as a tour guide at a local advertising agency.
| A．struggling | B．struggled |
| C．having struggled | D．to struggle |
The Shanghai Expo has attracted more than 73 million tourists, ________ it the most successful in history.
A. makingB. makes
C. made D to make
. I’m examining the composition he has just finished ________ the possible mistakes in it.
| A．to correct | B．correct |
| C．corrected | D．correcting |
Children are always asking all kinds of questions because they are ______ about the world they live in.
| A．curious | B．worried |
| C．anxious | D．careful |