Sam spends half an hour TV every day.A. to watchB. watching C. watchD. watches

问题补充：

Sam spends half an hour TV every day.

A. to watch

B. watching

C. watch

D. watches

答案：

A. to watch

(答案→)B. watching

C. watch

D. watches

解析：

试题分析: 句意：山姆每天花费半小时看电视。spend some time（ in） doing花费时间做某事，固定句型，故选B