问题描述:
rainy days make me sad.make怎么没加s?
1.Ten days is a long time.
2.There are sixty minutes in an hour.
为什么第1句是is,第2句是are呢?
1.Ten days is a long time.
2.There are sixty minutes in an hour.
为什么第1句是is,第2句是are呢?
问题解答:
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