I don’t like the way _______Tom speaks to his motherWhich one is wrong?

My families consider ____ a computer, which is considered _____ a great help in our work and study.[ ]

Knowing what colors look good _______ your skin is of great importance when you buy clothes.

____was known to us all that Johnson had broken his promise____he would give each of us a small gift.

If he refuses to _____ my plan, I can probably find someone more cooperative.