当你打电话给对方介绍自己是凯特时,应该说: A. Hello! I'm Kate. B. Hello! This is Kate. C. Hello! Are you Kate?
The twins______in Dalian last year. They______here now.
______your parents at home last week﹖
My father______ill yesterday.
She has three new _______.A. teacher B. student C. teachers
Who are ______?A. they B. them C. their