问题

Why not look up the new word in a dictionary _____ you don’t know it

A:if;;
B:that;;
C:though;;;
D:whether;

正确答案是：

同类题型

What did Zhai Zhigang do while he was doing “walking” ____? — He ____ our national flag to the world

Could you tell me_______ – At nine o’clock, in ten minutes.

It’s no use _______ to persuade him. You’ll only waste your time. [ ]

．____ tomorrow, I will pay a visit to my grandparents．

“_________” is another way of saying “cookie”.