[七年级数学寒假作业]设上个月进口石油的费用为x元，石油进口量为y元 这个月进口石油的价格=（1+14%）x\(1-5%)y 上个月进口石油的价格=x\y 这个月的石油价格相对上个月的增长率=（这个月进口石油的价格-...+阅读

1.I'd like to,but I can't,I have to go to for my piano lessons.

2.He can＂t,he got to study.

3.Cant you stop by and discuss that problem in my house?

4.Last week I went to downtown with my friends.

5.Were there croweded in the aquarium yesterday?

6.This conpany is specialized with foreign trade.

7.How many tips you can get depends much on wether the service you deliver good or not.

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