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