Rewrite the sentences. Correct the wrong uses of phrasal verbs with weigh.

1. I weighed on a kilo of flour and then added water to it.
2. He's very irritating. When you're trying to have a rational discussion, he always has to weigh through with his own selfish point of view.
3. I owe Gina £250, it's been weighing over my mind for weeks. I must pay her back.
4. We were weighed up with huge suitcases and bags, and the airport was terribly crowded, it was a nightmare.
5. I have to weigh in the various options before I decide which job to accept.