--- He worked out such different questions at a very young age.
--- Oh, he ______ a very smart student then.
| A．could have been | B．should have been |
| C．might have been | D．must have been |
相关试题
_______ in a new country, I was scared and feeling pretty anxious.
| A．For the first time I was | B．I was the first time |
| C．Being the first time | D．This being my first time |
I ________ to the lecture this afternoon, but I ________ a bit ill.
| A．should have gone; was | B．would have gone; had been |
| C．should go; was | D．would go; had been |
I think you should complain — ______, of course, you are happy with the way things are.
| A．Until | B．Unless | C．As | D．While |
Thanks for your kind help! We would have ____ lost the game!
| A．therefore | B．or | C．otherwise | D．then |
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