Even many years after his divorce, he still couldn’t figure out the reason for his ____ marriage.
| A．to fail | B．to be failing | C．failing | D．failed |
Thanksgiving Day offers the Americans an opportunity to join in a spirit of fellowship and express ________ for the year's bonuses and blessings(奖金和祝福).
| A．consideration | B．resolution |
| C．appreciation | D．reflection |
Have you had the computer ________ ？ You see it really needs ________ .
| A．to repair; to repair | B．repair; repairing |
| C．repaired; to be repaired | D．repairing; repair |
He is very popular among his students as he always tries to make them ________ in his lectures.
| A．interested | B．interesting |
| C．interest | D．to interest |
Alexander tried to get his work ________ in the medical circles.
| A．to recognize | B．recognizing |
| C．recognize | D．recognized |
There are some health problems that, when ________ in time, can become bigger ones later on.
| A．not treated |
| B．not being treated |
| C．not to be treated |
| D．not having been treated |