–Do you know what Mike does all day? –I know he spends at least as much time watching TV

问题补充：

–Do you know what Mike 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

答案：

A. is doing

B. does

C. spends in

(答案→)D. does doing

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