Rewrite the sentences so that their meaning unchanged. 1/ As long as she provides us with help, we may help her again. => If/ Provided that ……………………………………….. 2/ Come on time or we will go without you. => Unless ………………………………………………… 3/ Unless you leave me alone, I'll call the police. => Should ………………………………………………… 4/ Have you ever visited Lang Co Beach? => Is this the first ………………………………………..? 5/ It rained twice this week. It is raining now. => It is the third time ……………………………………. 6/ You use your mobile phone a lot, so you have large phone bills. => If ………………………………………………………. => Were ………………………………………………….. 7/ It’s pitiful that she can’t come to my house for the party and have fun together. What a pity => If she …………………………………………………. 8/ The students should submit the assignment on time. => The assignment ………………………………………. 9/ Water always boils when you heat it long enough. => Unless ……………………………………………….. 10/ Human can't live without water and air. => Were there …………………………………………… 11/ I think you should tell your pteacher the truth. => Were I ……………………………………………….. 12/ The last time my cousin sent me an email was a year ago. => My cousin has not …………………………………… 13/ It is a long time since we last phoned each other. => We …………………………………………………… 14/ They have to speak English in Pakistan. => English ………………………………………………. 15/ Our taecher asked us not to cheat in the exam. => We ……………………………………………………. 16/ People used special instruments to predict some natural disasters. => Special instruments ………………………………….. 17/ I’m not you, but I think you should clear up the messy things on the floor right away. => If I were …………………………………………….. 18/ Sitting long in a certain place can cause obesity. => Sitting can lead ………………………………………. result ……………………………………… make people ……………………………… 19/ Most people left. Then the fire began to rage for eight hours. (BEFORE) => Before the fire …………………………………………….. => ………………………………after most …………………. 20. The tsunami happened. Many people in this area became homeless. (made) => ……………………………………………………. 21/ They have played chess for around two thousand years. => Chess …………………………………………………. 22/ They rebuilt the ruined houses in my town after the typhoon. => The ruined houses ……………………………………. 23/ Anna felt seriously sick because she worked hard. (LED) => Anna’s working ……………………………………… 24/ Julie took the message from a new client. Then she left her office. (AFTER) => ………………………………………………………..