( )---_______is this hairdryer?
---It’s my mother’s.
A. Whose B. Who C. Who’s
( )（3）当你想和对方一起唱歌，应说：
A. Do you like singing ?B. Let’s sing a song together .
( )（2）如何询问对方来自哪里：
A. Where are you want to go ?B. Where are you from ?
( )（1）欢迎新同学来到我们班级，应说：
A. Pleased to meet you ! B. Welcome to our class !
( )（15） Here is a picture ____ my family .
A. toB. in C. of
( )（14） She is ____ music teacher .
A. weB. us C. our