Who knows the key ____ Exercise 1? Put up your hands.A. to B. of C. with
—____ your sister know Tom? —No, she ____.
—Hi, Lucy. Your skirt is very nice. —____
—Can you give this book ____ Jack? —Yes, I can.
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.
—____ are you? —I’m five .