问题

_____ I was on a train and a Chinese university lecturer told me a story about his sister and brother-in-law.[ ]

A: When
B: While
C: As
D: Once

正确答案是：

同类题型

You will find what great benefit the computer you own can be________each time you use it to help you work.[ ]

The floor is dirty. Would you please _— With pleasure.

c. What’s wrong D.What’s trouble

I’ll use the blender. Would you please __

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