问题补充:
Don’t complain your teachers doing too much homework, because they want you to be the best.
A. to; to
B. to; about
C. about; to
D. about; about
答案:
A. to; to
(答案→)B. to; about
C. about; to
D. about; about
解析:在英文中complain to sb about sth表示向某人埋怨某事,故选B。