Napisz 6 zdań z prefitem (un im ir itp.)

1) I always helped my friend but he was continually ungrateful.  2) Most of the students are incapable of doing this task. 3) Because my parens misunderstood me, there was an argue. 4) The cell phone may overheat, when you use it while charging. 5) Sometimes one desires to solve a problem but one handles irrationally. 6) I disliked going to school.