помогите пожалуйста :)

откройте скобки :

1) Our car (burn) a lot of petrol.
2) Look over there! A house (burn)!
3) The candles on the Christmas table (burn) the whole evening.
4)You (burn) all the coal yet?
5) Yesterday my dad’s car (burn) 15 litres of petrol.
6) The gas cooker (burn) for three hours already and I’m still cooking.
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