____, he does not know the answer.
| A．As he is a teacher | B．As he is teacher |
| C．A teacher as he is | D．Teacher as he is |
Jiaxing is such a beautiful city that it is well worth __________.
| A．visit | B．visiting |
| C．visited | D．to visit |
You can't imagine the difficulty he __________ into the cold river and saving the drowning girl.
| A．had to jump | B．had jump |
| C．had jumping | D．had jumped |
Lydia doesn't feel like __________ abroad. Her parents are old.
| A．study | B．studying |
| C．studied | D．to study |
—Your daughter is in her thirties. I can't understand __________ married again and again.
—Now she is at the peak of her career. Work means more to her than anything else.
| A．her to delay to get | B．her delaying to get |
| C．her to delay getting | D．her delaying getting |
—I take exercise for about an hour every morning.
—No wonder you look __________.
| A．energetic | B．enthusiastic |
| C．patient | D．kind |