—____, Tom. Is this your book? —No, it isn’t. I think it’s ____.
--I hear that Tom's sister is a teacher here. --Yes, the girl is standing under the tree is his sister. A. who B. whom C. whose
--Is Peter a new member in your art club? --No. He _____ our club for two years. A. joins B. has joined C. has been in
--There goes the bell. --It's time for class. Let's stop . A. talk B. talking C. to talk
--Don't ______ too late, or you will feel tired in class. --I won't, Dad. Good night ! A. stay up B. get up C. wake up
--What a clean kitchen! --Yes, and it _____ by my mother every Saturday. A. cleans B. is cleaned C. has cleaned