Is the sentence right or wrong?
Fred might not come to the party, he might be busy at work.
My daughter is four years old and she can read and write.
Mr Johnson can come tomorrow.
Can you close the window, please?
BUT: Does he always close this window?
I must go to the dentist.
BUT: I needed to go to the dentist yesterday.
We may sit here.
BUT: I want to sit here.