Mistakes

Aim at, not on or against. Don't say: She aimed on {or against) the target. / Say: She aimed at the target,
Note Use the preposition at to denote direction, throw at, shout at, fire at, shoot at. Shoot (without the at) means to kill
He shot a bird (= he hit and killed it)

Angry with, not against. Don't say: The teacher was angry against him. / Say: The teacher was angry with him.
note I Was get angry with a person but at a thing He was angry at The weather 'not with the weather) Note Also annoyed with, vexed with, indignant with a person, but at a thing.

Anxious (= troubled) about, not for. Don't say.'They're anxious for his health. ·/ Say: They're anxious about his health. Note Anxious meaning wishing very much lakes for Parents are anxious for their children's success.