选择正确答案。(28分)
A 
B 
C 
D 
E 
F 
G 
（1）Don't walk!
（2）Go straight on!
（3）Don't turn left here!
（4）Turn left!
（5）Don't ride your bicycle here!
（6）Be quiet!
（7）Go！It's green now!
你妈妈告诉你，你的书包在椅子上，她应说：
A.My bag is on the chair.
B.Your bag is on the chair.
你想告诉对方你的桌子上有面镜子，应说：
A.This is a mirror on my table.
B.There is a mirror on my table.
你想让对方看你的卧室，应说：
A.Look at my bedroom.B.Look my bedroom.
你想知道垃圾箱在哪里，应问：
A.What's the trash bin? B.Where is the trash bin?
There is a bridge the river.
A. onB. inC. over