in. Use into to express motion.
Bad. He went in the house.
Better. He went into the house.
liable. Use likely or probably unless referring to something undesirable.
Bad. He is liable to pass the course.
Better. It is likely that he will pass the course.
Better. He will probably pass the course.
like. Use as or as if to introduce a clause.
Wrong. Do it like I do.
Right. Do it as I do.