Where ___ the keys?A、am. B、is C、are.
( )你向别人询问一个问题前,你应该说:A. Excuse me. B. Thank you.
( ) ---Come here, boys and girls. ---________.A. OK. B. Let’s go. C. Yes, please.
( ) Excuse me , what’s this _____English?A. on B. in C./
( )— Let’s go to Beijing______.—Great!A. a plane B. by train C. Great!
( )It’s ________ rubber.A. my B. an C. /