It is not polite to enter others’ rooms knocking on the door. A. by B. with C. without
.I'm sorry you've missed the train .It _______ for 10 minutes . A. has left B. has been away from C.has been away
---- What are you going to do this weekend ? ---- I'm going to do some outdoor activities _______ it rains . A. If B. unless C. because
She has succeeded in _____ the problem. A. solving B.solve C.to solve
---- Would you like a hamburger or a hot dog ? ----_______ is OK . I really don't mind . A. Either B. None C. Neither
They_________ all their money, so they have to walk home now. A. spend B. will spend C. have spent