1)The government ................ increase taxes again. A. have decided B. has decided C. have decided to D. is deciding 2)The world’s population will continue to rise ............... we don’t do anything about it. A. how B. however C. if D. unless 3)What would Tom do if he ................ the truth? A. would know B. knows C. has known D. knew 4) If I ................ you were sick, I would have called sooner. A. have known B. had known C. would have known D. know 5)If you want to go skiing in the South, ................ to Black Mountain. A. you go B. you’ll go C. go D. you went 6)If I ................ you, I’d call and apologise A. am B. were C. would be D. was 7)Jake will win the election if he ................ harder. A. will campaign B. would campaign C. campaigned D. campaigns 8) If the ball ................ the line, that would have been the end of the game. A. would cross B. will cross C. had crossed D. crossed 9) If someone knocked a candle over, it ................ a fire. A. will start B. started C. would start D. would have started 10) If you ................ told us about the bad service, we would have eaten there. A. hadn’t B. don’t C. didn’t D. wouldn’t have