问题描述：
1）we want to have a picnic tomorrow,but we don't know if it _____(rain)
2)he has learned english for about 8 years 同义
it ____about 8 years ____he has learned english .
3)kate didn't know( how she should send the e-mail)提问
____ ____kate know?
2)he has learned english for about 8 years 同义
it ____about 8 years ____he has learned english .
3)kate didn't know( how she should send the e-mail)提问
____ ____kate know?
问题解答：
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