27. —Haven’t I told you that I like the beef well-done?
—Yes, but I _______ it longer than I usually do.
| A．was cooking | B．cooked | C．had cooked | D．will cook |
--How is your grandfather now?
--Oh, he _______for two weeks.
| A．died | B．has died | C．dead | D．has been dead |
There is no doubt______ one day the medicine for AIDS will be made.
| A．that | B．whether | C．if | D．so |
After the accident, no one_____ except a few people who were badly injured.
| A．saved | B．rescued | C．survived | D．selected |
With his work______ on time, he felt very excited.
| A．to be finished | B．to finish | C．finishing | D．finished |
We must believe in ourselves,_______, I think, is the most important in our life.
| A．where | B．what | C．which | D．that |