噎膈痰气交阻证的治法为（）

A.开郁

B.滋阴

C.化痰

D.散寒

E.润燥

—Do you always spend lots of time              playing computer games?

—No, but I spend much time              my homework. [ ]

A. on; in

B. on; on

C. in; on

D. in; in