We offered him our congratulations ____ his passing the college entrance exams.
| A．at | B．on | C．for | D．of |
相关试题
All of us found ______ difficult to work out the maths problem.
| A．what | B．that | C．which | D．it |
By the time these books were published, he _____ addicted to them.
| A．had become | B．becomes | C．has become | D．became |
I’m fine — I just felt a bit sleepy and tired, that was ________ I went to bed so early."
| A．because | B．when | C．that | D．why |
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