__________ you may have, you should gather your courage to face the challenge.
| A．However a serious problem |
| B．What a serious problem |
| C．However serious a problem |
| D．What serious a problem |
The old man didn’t know whether to sell the car or____ .
| A．being kept for later use | B．kept for later use |
| C．to keep it for later use | D．to be kept it for later use |
Mr. Brown said that his car needed
| A．to be repaired | B．being repaired | C．be repairing | D．to repair |
Tom had no choice but _____ the classroom with his classmates.
| A．to clean | B．clean | C．cleaning | D．cleans |
Bob should love _____ to the party tomorrow evening.
| A．taking | B．to be taken | C．to take | D．being taken |
The man was seen _____ into the courtyard.
A, stealing B. stolen C. be stealing D. had stolen