I don’t know if he ______ here tomorrow. If he _______ , I will tell you.

Mary sings _________.

I received a letter_____ Jim yesterday.[ ]

If you don’t go to the meeting tomorrow, ________ ?

Jack, I want to change my job. You know I haven’t achieved anything since I took up teaching. — Really? There is not a job considered the best one! As we all know, ______!