用is, am 或are 填空
（1）Excuse me. What _______ this in English?
（2）________ the your coat, Mr Green? No, it _________ not.
（3）What ________ these? ___________ they maps?
（4）This __________ your bike. Where __________ my bike?
（5）__________ in Class Eleven. What class ___________ you in?

（）-What’s your name, please? ---- ________

（）----Hello, Lin Tao. How are you? ---- _________.

（）----It is _________ ruler. ---- It is not __________ eraser.
A. /, an B. a; an C. the; the

（） ---- Is that your watch over there? ----No, it’s _______ watch.
A.my B. this C. my sister’s