<DEB>Philippe CHENEAU a écrit le 10/11/15 11:17:55<MID>1. be able to
2. can
3. was able to
4. am able to
5. be able to
6. cannot
7. were able to 
8. did not be able to
9. be able to  // cannot
10. was able to
11. could
12. be able to<FIN>