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
