【正确答案】 D

【答案解析】[解题指要] 该题测试动词do可代替其前的动词部分的用法。does doing his lessons中的 does相当于spends much time。doing his lessons与watching TV并列，为spend +time (in) doing something句式。类例：She likes English as much as her mother does．C选项spends是个及物动词，因其后面无宾语，故不用。