can是情态动词吗?can的过去式could也是情态动词吗?
选C.watch一般是观看,看电视什么的,或是注视,看守,look就是一般的看
innovation: 1.something new or different introduced. 2.the act of innovating; introduction of new things or methods. 这个词的定义在几乎所有英文词典里都可以找到,具体用词可能有些微差异....
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A:Good morning ,sir,Can i help you?B:I want to exchange the money.How about the current exchange rate A:OK,sir.the current exchange rate is .and you need to fill in the exchange memo if you want to ......
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