______ the case, I couldn’t helpbut______ him.

My mother was in hospital for six months. She felt as if she was _____ from the outside world.

Our school life is very interesting. We have much time _______ all kinds of after-school activities and we only have half an hour _________ homework.

填入下面文段空白处的词语，最恰当的一组是真正的在自然状态下的野生虎都是独居， ① 在交配期雄虎和雌虎 ② 在一起生活。野生动物园 ③ 保证观赏性，把一大群老虎圈养在同一片区域， ④ 说这个区域看起来很大、很宽敞，跟野外环境里一只老虎正常的巡游范围还是 ⑤ 没法比， ⑥ 这种圈养方式本身还是在违背动物的天性。

________in the computer games，the boy no longer put his heartinto study.