1) If he didn't tell me the story, I wouldn't be able to help him. ---> Unless 2) He couldn't gain anything unless he tried harder. ---> If 3) He would pass the driving test if he didn't drink much alcohol. ---> Unless 4) Stop talking or you'll be sent out. ---> Unless 5) You didn't listen carefully; that's why you didn't understand. ---> If 6) It is two years since I saw Tom. ---> I haven't 7) I last drank champagne at my brother's wedding. ---> I 8) We had to put off our visit until later ---> Our 9) When did you start talking part in this voluntary club? ---> How long 10) How about going out for a change? ---> Why don't we 11) The mother doesn't allow her children to watch too much TV. ---> The mother doesn't let 12) People need to repair this road. ---> This road needs 13) My younger brother is very eager to go to the concert. ---> My younger brother is looking 14) Her father allows reading these books. ---> Her father permits her 15) She spends two hours writing these letters. ---> It takes Làm ơn giúp mình với, T2 mình Kt phần này rùi (っ˘̩╭╮˘̩)っ