Not having worked out the problem, _____ leave the office．
| A．so he was not allowed to | B．and he didn’t want to |
| C．the teacher couldn’t make him | D．he couldn’t free himself to |
—What fruit is in season now?
—Grapes and peaches， ______.
| A．I know | B．I think | C．I see | D．I feel |
The pilot got over all the difficulties, _______ the plane safe and sound, for which he was highly spoken of.
| A．to land | B．landing |
| C．landed | D．land |
The bike needs _______, I am afraid.
| A．repairing | B．to repair |
| C．repair | D．be repaired |
______ to somebody, a British person often shakes hands with the stranger.
| A．Introducing |
| B．To introduce |
| C．To be introduced |
| D．On being introduced |
He made so many mistakes and deserved _______.
| A．being punished |
| B．to punish |
| C．to have punished |
| D．to be punished |