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.
Thirteen－eleven＝？
A. one B. two C. four
Twenty－five＝？
A. fifteen B. nineteen C. eighteen
Ten－three＝？
A. five B. six C. seven
–How much is this T-shirt? - __________________
A. It’s thirty yuan. B. Fine, thank you. C. Yes, they are.
–Where is the TV room? - ___________________
A. It’s on the second floor. B. It’s a TV room. C. It’s a TV.