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Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble.
1. Zurich is the most
(desirable/desireable) city in the world.
2. He is the most
(valuable/valueable) player on the team.
3. The weather is
4. I hope people will design more
(useable/usable) web sites.
5. There are
(noticeable/noticable) changes in temperature in the room.
6. Do you kow how to be
7. The scientists are trying to build a
8. E-mail is usually
9. The teacher gave students a
10. This is an
(exchangeable/exchangable) image file format.