当你想向别人介绍自己的老师时，你可以说：_________
A. This is my classroom. B. This is my teacher.
Is this your tuler? No, it’s ______ ruler.
A. my B. your C. you
What colour can you see? I can see ______.
A. an orange B. orange C. oranges
Listen ______ the cat.
A / B. at C. to
It isn’t hot. It’s _______.
A. small B. cold C. hard
I can see ________ in the sky? _______
A. blackboards B. rabbits C. birds