Make the following sentences interrogative and negative:
Example: Mary and Adam have been married for 10 years. – Have Mary and Adam
been married for 10 years? Mary and Adam haven’t been married for 10 years.
1. I have had an appointment with my dentist.
2. My parents have already sold their old car.
3. My sister has already been to Paris.
4. I have just finished reading this book.
5. Не has just come back.
6. He has lost his wallet.

1. The automobile is made up of three basic parts.

2.The engine is the source of power that makes the wheels rotate and the car move

3. The includes engine is fuel, cooling, lubricating and electric systems.

4. The chassis includes a power train, a running gear,steering and braking systems.

5.The power transmission, in turn, contains the clutch, gearbox, propeller or cardan shaft, final drive, differential, rear axle and axle shafts.

6.The running gear consists of a frame with axles, wheels and springs.

7. The body has a hood, fenders and accessories: the heater, stereo tape recorder, windshield wipers, conditioner, and speedometer.

Объяснение:

1. Peter (was reading) by the fireplace when the door ( opened) and the maid (entered). The cook (followed) her. 2. When the mother (satisfied) herself that the children (were sleeping) peacefully in their beds, she (took) out the Christmas presents and carefully ( put) them into the stockings which (were hanging) at the beds. 3. If you ( ring) me up tomorrow, I (will tell) you all about it. 4. The lesson (has not yet begun), and the children (are talking) loudly in the corridor. 5. I (have lived) in St. Petersburg since 1991. 6. By the fifteenth of January the students (had passed) all the examinations. 7. The students (had written) the paper by dinner-time. 8. They (had been sailing) down the river for many hours before they ( came) to the village. 9. I (have not been) to my home town for five years. 10. The rain (had stopped) by the time we ( reached) home. 11. The message (arrived) five minutes after he (had left) the house. 12. It (was) nearly eleven o'clock when we ( began) doing this work. 13. At last the reply from my grandmother (had come), and my mother (told) me that she (would come) soon. 14. Here you (are) at last! I (have been waiting) for you for twenty minutes. Aren't you ashamed?