He pretended to be a doctor，but ____ he is a cheat

Did you go to the show last night— Yeah．Every boy andevery girl in the area ____ invited．

The contract is very important for both of you, so studying it ____ before signing is necessary.[ ]

No one in the department but Tom and I _________ that the director is going to resign.

Don’t smoke any more. It’s bad for your health.— I am trying to . It’s really hard , you know.