务必请坐。
A. must sit down.
Be sit down.
C. sit down
Do sit down
一定要努力学习。
A. Do study hard.
B. Study hard.
C. To study hard.
D. To hard study.
不准乱扔杂物!
A. No entry!
B. No litter!
C. Go this way,please.
D. Li Ming,come here.
Go upstairs right now!
A. 上楼直走。
B. 现在去楼上
C. 走,上楼!
D. 马上上楼去!