I can climb the trees easily.
I can swim well .
It may rain .
She may pass the exam.
He must pay for the tickets.
We must find that book .
You have to clean the room .
I have to visit the dentist.
You shouldn't talk to me like that .
You should call the police .
I am able to draw a dog.
I am not able to play basketball today.
Would you open the window, please. ?
Would you like tea or coffee?