1. A kangaroo has such strong legs ______ it can jump over a car.

2. Tom is in his room. He ____________ the piano.

3. Nobody _________ why people walk or talk in their sleep.

4. Who ________ : "To be or not to be, that is the question"?

5. Pluto is ___________ of all planets.

6. My father always gives me __________________.

7. Can you imagine ___________________ in 2050?

8. What do you want _________ ?

9. People use ______ words and gestures to express their feelings.

10. John F. Kennedy was the youngest president of the USA and ___________ to be murdered.

11. I ___________ this car for a year.

12. ____________ that strange man sitting over there?

13. You will find your way to the village without difficulty _________________________ .

14. There are not _______ easy ways of learning a foreign language.

15. I find it difficult to talk to Alan because we have so _________ in common.