通过所学，初步梳理下唐朝诗歌演进脉络。

A. They should wait patiently.
B. They should ask that man to leave.
C. They should serve that man immediately.
D. That man is old enough to order things he likes.

A. Students cheat on exams.
B. Individuals take advantage of other people.
C. Politicians tell lies in their dealings.
D. Businessmen do not keep their contracts.

A. selections
B. collections
C. sources
D. origins