1.They kept the fire_____to keep them warm A.to burn B.burn C.burnt D.hurning 2.Who's the boy_____under the tree? A.stand B.to stand C.standing D.stood 3.I don't like to sit here____nothing A.doing B.do C.to do D.does 4.The girl student enjoy____English songs A.singing B.to sing C.to do D.sung 5.Thank you for_____us so well. A.to teach B.teaches C.teaching D.taught 6.I often do some_____on Sundays. A.washed B.to wash C.wash D.washing 7.The boy_____Li Hua in Class One is his brother. A.called B.calling C.to call D.call 8.It often takes me half an hour_____home A.walking B.to walk C.walked D.walk 9.Don't forght_____her clean water every day. A.to give B.giving C.given D.give 10.I thing it important_____English well. A.learning B.learn C.to learn D.learned 11.The funy story makes us_____. A.laugh B.laughing C.to laugh D.laughed 12.She was often heard_____in English. A.sing B.singing C.sung D.to sing