平面内有一点P,点P到⊙O的最短距离是6cm,最远距离是10cm,则⊙O的半径为
连线。 (1)Where is your sister? A I’m fine. Thanks. (2)What’s his name?B No, it isn’t. (3)Who’s this?C This is my mother. (4)Is Wang your first name?D His name is Billy. (5)How are you?E She is in the room.
What is she _______ now? A. do B. does C. doing
_________ is this? This is Billy. A. Where B. What C. doing
________ your friend American? No, he isn’t. A. IsB. Are C. Am
________ name is Sandy. A. She B. Her C. His