同学,很高兴回答你的问题
才看到你发来的求助题,所以回答晚了些
正确答案：
Because of the rain,we couldn't see anything below.同义句转换
( Because ) ( it ) ( rained ),we couldn't see anything below.
We walked for ( another ) ( two ) hours before we got to the top.
或
We walked for ( two ) ( more ) hours before we got to the top.
The student wonder when we ( will ) ( have ) a class meeting.
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不明白请继续追问,
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