问题

She buys the ring ______ a very cheap price.[ ]
A: in
B: at
C: on
D:for
B: at
C: on
D:for
正确答案是:
同类题型
Tom. Why do you look so tired? — Because I often study late ______ 10 o’clock at night.[ ]
We don’t believe _____ little children can do ____ much work in such a short time.
Did you see a boy in blue pass by just now?—No, sir. I ______ a magazine.
The charity walk begins _______ 9.00 a.m. Don’t be late.—No problem.[ ]