【正确答案】 A

【答案解析】解析：结构识别。fret over因(无谓的小事)焦虑：Don’t fret over trifles．不要为那些小事忧虑不安。worry about担心：Your parents are worrying about you．你父母正担心你呢。get involved in涉及；get angry about因……变得很生气；look for寻找，期待。