10. Use the Passive voice and name the tense.
A. 1. They are building a new school here. 2. Don't come into the room. We are airing it. 3. Are they still discussing this problem? 4. What film are they showing on TV at the moment? 5. Who is singing this fine song? 6. Nobody is doing anything about this situation. 7. You are doing the work in the wrong way. 8. Wait a little, we are boiling the kettle.
B. 1. When I came in, the teacher was explaining a new rule. 2. Mother was cooking something tasty in the kitchen when I woke. 3. What were they discussing when you entered? 4. What were they showing on TV last night? 5. Were the police searching the house at that time? 6. I looked in. They were decorating the Christmas tree.

1. today i will talk about my favorite celebration of the new year. 2. for me it's a special date, because every year we wait for that moment when you think of your fondest desire. 3. it is a time when we can reconvene our happy family at the festive table and wish each other the very best for the coming year. 4. the special atmosphere of the miracle gives the process of decorating the christmas tree and the smell of tangerines 5. the best part of year craziness is to choose gifts for friends and relatives, and then to see their happy faces. 6. this holiday is special because despite in what country you live in, what kind of nation, you'd be closer with the world and enjoy a shared moment of happiness. 7. with the onset of novogodnih vacation, you can sit quietly by the fireplace in this christmas atmosphere to dream about something, or to remember the good moments of life. 8. in my free time to do winter sports, which is very useful for health

2)

1. listened

2. was playing

3. were; doing; rang

4. visited

3)

1. went

2. have already written

3. has done

4. played, danced, sang

Объяснение:

На Past Simple указывают слова yesterday, 2 weeks ago, in 1999 и т.д, в утверждениях использует V2/Ved

На Past Continuous слова, такие как yesterday at 5 o'clock, from 3 till 4 yesterday и т.д, в утверждениях использует be в времени (was/were)+Ving

На Present Perfect: already, yet, today, this week (today, this week - при условии, что этот временной промежуток не окончен) и т.д. В утверждениях использует have/has+V3/Ved