问题描述：
1._I'm going to Japan next month .---_______you are there ,can you buy me a digital camera?
1._I'm going to Japan next month .
---_______you are there ,can you buy me a digital camera?
A.As B.while C.Before D.Because
为什么不选A?
1._I'm going to Japan next month .
---_______you are there ,can you buy me a digital camera?
A.As B.while C.Before D.Because
为什么不选A?
问题解答：
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