Make the Present Perfect Continuous questions. 1. How long ………………….. for me? (you / wait)
2. What ………………………………….. since he returned? (John / do)
3. Why ………………………………… meat lately? (you / not / eat)
4. There’s so much snow on the road. …………………………. all night? (it /
snow)
5. Why …………………………….. for such a long time? (Sam and Mary / argue)
6. ……………………………… my shampoo? There’s not much left. (you / use)
7. How long ………………………………. glasses? (Jill / not wear)
8. …………………………….. since you decided to take the exam? (you / revise)
9. Where ………………………………….. lately? (your dad / work)
10. Your hands are covered with chocolate. ………………….. a cake? (you / make)

1. How long have you been waiting for me?

2. What has John been doing since he returned?

3. Why haven’t you been eating meat lately?

4. There’s so much snow on the road. Has it been snowing all night?

5. Why have Sam and Mary been arguing for such a long time?

6. Have you been using my shampoo? There’s not much left.

7. How long hasn’t Jill been wearing glasses?

8. Have you been revising since you decided to take the exam?

9. Wherehas your dad been working lately?

10. Your hands are covered with chocolate. Have you been making a cake?

Объяснение:

Electricity went side by side with the man over the centuries. how to facilitate and improve the lives of people development of this industry. it is difficult to imagine our life without all the usual appliances in any home, my concrete - without a computer. with disbelief and even reverence i read stories that once lit the light in the streets lamplighters. this is how much it was necessary to get around lampposts, a ladder and light the lights! and feel proud of our country - it's our countrymen invented the light bulb, without which the world now is not its existence.          electrician profession, we can say relatively young profession. after the first power have earned only a few centuries ago abroad, then the electricity came in tsarist russia. there was a need in this specialty. the first electrical immediately gained popularity. then few people knew about the principles of systems, and how to use electricity, too, did not know why the first electricians acted as consultants. our modern life shows that public importance, relevance profession electrician did not decrease, but rather increased. changed and the requirements for it. after all, if earlier it was enough knowledge of primitive circuits and devices, now advanced technologies require continuous improvement and technical updates.           i think that's the usefulness and social significance is the choice of profession. being energy - honorable and responsible mission, much needed people.