_______hard you try, it is difficult to lose weight without cutting down the amount you eat .
| A．However | B．Whatever | C．Whichever | D．Whenever |
When we got to the air-port, the plane was starting __________.
| A．taking off |
| B．to take off |
| C．take off |
| D．to taking off |
Never in my wildest dreams __________ these people are living in such poor conditions.
| A．I could imagine |
| B．could I imagine |
| C．I couldn't imagine |
| D．couldn't I imagine |
You can not imagine a child __________ so cruelly.
| A．to treat |
| B．treating |
| C．being treated |
| D．to be treated |
I can hardly imagine Peter __________ across the Atlantic Ocean in five days.
| A．sail |
| B．to sail |
| C．sailing |
| D．to have sailed |
-Look! Dad, my college certificate！ I've got it!
-__________，dear ！ You have finally realized your dream.
| A．Congratulation |
| B．Celebrations |
| C．Congratulations |
| D．Greetings |