中国历史上最勤政的皇帝是谁？
参考答案：
中国历史上最勤政的皇帝是雍正。
—What you on the weekend ? —I read books.[ ]
A. do, do
B. does, do
C. are, do
— What does the sign over there read?
— "No person _____ smoke or carry a lighted cigarette,cigar or pipe in this area." [ ]
A. will
B. may
C. shall
D. must
