E. put the verbs in brackets into the present perfect continuous. 1.) about pollution at school this week. 2.) nesting boxes for a month. 3.you look /work)in the garden all afternoon? 4. the ) about the problem and it is trying to find says to reduce acid rains. 5.) solar power for ten years now. 6.) all day. f. fill in the question tag. e.g. camels live in the desert, don't they? 7.the story isn't 8. the oil killed many 9.you don't want to go out 10.we are running out of 11.i could join as

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— Where are we ( going) now, Tom?
— We are going to our glade, Ann. There we (will have) a picnic.
— (Isn't) it our glade, Tom? But there (is) so much litter here!
— Somebody ( left) all this rubbish in such a beautiful place! Just look at these empty cans and bottles!
— And look, Tom, somebody (has not put out) a campfire! It (is still burning)!
— Well, this place ( looks) horrible. And this (is) our favourite place for having picnics!
— Right. But we (have never left) rubbish here. We (always picked) the wrapping papers and cans and ( carried) them to the nearest waste bin. I think we (have to clean) away all the rubbish first.
— OK. Then I (will put out) the fire.
— And I (will pick) up all the rubbish. 

My yard is the most beautiful in the town, especially in summer. There are trees, flowered beds and green grass here. Everything is so beautiful. There is also a playground in the yeard where I play with my friends. There are small slides, merry-go-rounds and a sand-pit for kids. Our yard is being carried about by a keeper, that's why it is always very clean. My yard is also beautiful in winter. It is covered in white blanket. Trees are ice-glazed. Children ride sleds, play snowballs and make snowmen. I like my tidy and clean yard in any season.