10 graders: Modal Verbs

You mustn't forget certain things, such as: 

- no "s" in the 3rd person singular

- in the interrogative form we need "Inversion" (May I .....?)

- you do not need an auxiliar verb to write the interrogative or the negative forms

- Modal + verb in the infinitive (to)

This table was taken from a book called "Exercícios de Inglês 11º" by Porto Editora.I believe it is an excellent table to synthesize the Modal Verbs.

Now, I believe you're ready for some challenges:

Challenge A

Challenge B

Challenge C

Challenge D 

Challenge E

Challenge F 

Challenge G