Сделать 2 Задания

Put all possible questions to the following sentences. 1. After years of experimentations on the causes and effects of heat, it was finally found that heat is a form of energy. 2. Every pure substance when undergoing a change in state, either, evolves or absorbs heat. 3. In the vapour state the molecules are separated by large distances and may move anywhere in free space. 4. In order to separate all the molecules to the condition of the gaseous state from that of a liquid, a relatively large amount of energy in the form of heat is required.

Complete the following sentences using the right form of the verbs in brackets.

1. If it (not to rain), we (to go) to the country. 2. If you (to get up) at 7 a.m., you wouldn't have missed the train. 3. I would have called you, if I (to be) in town. 4. If she had been younger, she (to dance) with you. 5. If the wire (not to be) broken, the current (to flow). 6. He wouldn't have caught cold, if he (to wear) his warm coat. 7. If you (to buy) the tickets earlier, we (to have) better seats. 8. We (to be) very grateful, if you sent us the customer's name and address.