Robert with his two kids ________ to the beach for vacation every year.
-Where is John? -He ______ the science lab. A. has gone to B. has been to C. went to
-How about having a picnic with me? -I’d love to, ______ I’m afraid I have no time. A. so B. and C. but
-Dad, may I watch TV? -No, you can’t. You _______ finish your homework first. A. must B. can C. may
-Oh, so many people in the park? -Nobody likes to stay at home ______ Sunday morning. A. in B. on C. at
-How much is the pair of shoes? -Twenty dollars ____ enough. A. is B. are C. am