A smile costs _________, but gives so much. So we should learn to smile.
—I saw Helen in the library this morning. —No, it _________ her. She moved to France last week. A. can’t be B. can be C. mustn’t be
I don’t know if she _______ to the party. If she _______ , she’ll call me. A. will go, will go B. will go, goes C. goes, will go
—Who teaches _______ English? —Nobody. I learn it by _________. A. your, myself B. you, me C. you, myself
World No Smoking Day is ________ May 31. A. in B. on C. at
—__________ does Tim go to a movie? —Twice a month. A. How long B. How soon C. How often