根据所给中文意思完成句子，每空限填一词。
【小题1】他往房间里看了看，确定就他一个人。
He looked in the room to ________________ ________________ that he was alone.
【小题2】妈妈走过来，拿走了我的脏衣服。
Mum came to me and ________________ ________________ my dirty clothes.
【小题3】他搬得离办公室很远了。
He moved ________________ ________________ the office.
【小题4】小心!你会从树上掉下来的。
Pay attention! You may ________________ ________________ the tree.
【小题5】他终于找到了他的手机，他很高兴。
He found his mobile phone ________________ ________________ and he was very happy.