1. If you leave milk out of the fridge, it goes off. 2. If you put wood in water, it floats. 3. If you throw a ball up into the air, it falls on the ground.. 4. If you mix red and blue, you get purple. 5. If you add two and three, you get five. 1) If Peter (does) lots of exercise, he’ll be fit and healthy. 2) Please call me if you (need) any help. 3) Will Sarah (be) angry if we don’t go to the party? 4) Cathy will be able to go on holiday if she (saves) enough money. 5) Unless it (rains), we’ll go for a walk. 6) If you (work) hard, you may be promoted. 7) Will you (give) me a call if you have time tomorrow? 8) If you don’t do your homework, I (will not let) you watch TV. 9) Mary won’t go to Australia unless I (pays) for her tickets. 10) If he (arrives) on time, we’ll have dinner before we go out.
1does the school year begin in september 2does the first term last from september till the end of december 3do boys and girls go to school in january 4does the school year end in july 5do students write different tests at the end of each term 1do children like ice cream very much 2do people often go to the country in summer 3does nick always go to work by car 4do ann's friends spend their holidays in the south 5do people carry umbrellas in rainy weather 6do lakes and rivers usually freeze in winter 7do the shops open at 9 o'clock in the morning and close at 8 o'clock in the evening. 8 does tom work very hard 9does water boil at 100 degrees Celsius.