That girl _________ into trouble if she doesn't wear her uniform. (get)
That girl will get into trouble if she doesn't wear her uniform.
If you give in your homework late, the teacher ________ it. (not mark)
If you give in your homework late, the teacher won't mark it.
Don't write anything unless you ___ sure of the answer. (be)
Don't write anything unless you are sure of the answer.