Everything is ok, except in the last sentence it says "scape" instead of "escape" :).

regarding modal verbs

Is it correct to use these sentences? Or how would you say it better?

- Maria (can) type 80 words per minute.

- Tom's teacher says that he (was able to) play the violin pretty well in half a year.

- I (have to) meet him at the airport tomorrow.

- I'm sure that Nina (can) explain everything when she returns.

- My dog (could) jump very high when he was younger.

- Several criminals (were able to) scape into the woods.

Thank you :)