-----Do you know what Tom does all day -----I know he spends at least as much time watching TV as he ____ his lessons.A.is doing B.does C.spends in D.does doing 解析:将连词as 后的从句还原完整,得出:…as he spends (in) doing his lessons

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-----Do you know what Tom does all day -----I know he spends at least as much time watching TV as he ____ his lessons.A.is doing B.does C.spends in D.does doing 解析:将连词as 后的从句还原完整,得出:…as he spends (in) doing his lessons.此句中的 spends 可用does来代替.因此答案为:D 此句中的 spends 可用does来代替.为什么?

可以的,为了避免重复