题文
Why not look up the new word in a dictionary_______you don't know it?
| A．if |
| B．that |
| C．though |
| D．whether |
推荐试卷
Why not look up the new word in a dictionary_______you don't know it?
| A．if |
| B．that |
| C．though |
| D．whether |
试题篮
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