31．--Tom and Jim study very hard． -- and ． A．So do they,so you do B．So they do,so do you C．They do so,you do so D．So do they,so do you 【查看更多】

 

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--Tom and Jim study very hard．

--____________ and ________________．

A．So do they；so you do    B．So they do；so do you

C．They do so；you do so    D．So do they；so do you

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