6061铝板重量计算公式:1What day -------(was,is)it yesterday? 2We have fun-----(speaking,to speaking)English.

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写出原因 谢谢

was
speaking

was (yesterday是昨天的意思,是过去的时态。所以用was)

1.was yesterday要用过去式
2.speaking have fun doing 固定词组