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You have to complete sentences with can, could, will be able to, couldnʼt, must, have to, mustnʼt, neednʼt. 1.They …

1.They can understand French. 2. I couldn\'t ski when I was little. 3. Could your Granny dance when she was young? 4.You must respect your parents. 5.You must stop smoking! If you donʼt, you are going to have serious problems with your lungs some day. 6.We did not have to buy biscuits because our Granny had baked a delicious pie. 7. Will you be able to get up early tomorrow? 8.My sister needn\'t to write this letter: I shall phone them. 9.They must call the doctor because the grandmother was ill. 10. You mustn\'t argue with the headteacher. 11. I am sorry I couldn\'t come yesterday. I must work late. 12.What have you to learn by heart? - At school, I have to learn a beautiful poem “Leisure” by William Henry Davies. 13. Will you be able to post e-mail to him tonight?