You may watch TV this evening you must finish your homework first.A. soB. orC. andD. but

问题补充：

You may watch TV this evening, you must finish your homework first.

A. so

B. or

C. and

D. but

答案：

A. so

B. or

C. and

(答案→)D. but

解析：so因此；or否则，或者；and和，并且；but但是。句意：今晚你可以看电视，但是你必须首先完成作业。结合语境可知选D。