阅读下面短文，用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。
One afternoon, when lessons were over, Peter and Paul did not go home. They stayed in school 小题1:____(help) their teacher to start a new library in the school. They carried books for him. They worked for one hour and then their teacher said, "Thank you, boys. We 小题2:____(finish )the work tomorrow. Now you must go home."
When the boys reached home, it was seven o ' clock. It was dark outside, but there was a 1ight inside their house and the door was open. They were surprised 小题3:____( see) a man inside. They could see the man 小题4:____(look) for something.
"He 小题5:_____(be )a thief, "Paul said." I 小题6:______( report) to the police and you try to talk to him. Then Peter went inside while Paul quickly小题7:______(hurry)off to telephone the police. When the man saw Peter, he looked frightened. Then he smiled and said, " You don ' t know me, but I’ m your father’s friend. He has asked me 小题8:____(find )some money for him.” In no time, two policemen arrived. As soon as the thief saw the policemen, he tried to run off. But he 小题9:______(catch) by the policemen.
Just then the boys ' parents returned."
“Is this man your friend? " one of the policemen asked Mr. Lee.
"No! " said Mr. Lee. "He is a thief . He wanted to steal my money. I am glad you小题10:_____(catch) him."
小题1:to help
小题2:will finish
小题3:to see
小题4:looking
小题5:must be
小题6:will report
小题7:hurried
小题8:to find
小题9:was caught
小题10:have caught
题目分析：本文讲述Peter和Paul在回到家中发现家里有小偷，于是Paul去报警，Peter拖延时间。最后成功的抓到了小偷。
小题1:句意：他们呆在学校为了帮助老师建一个新的图书馆。这里是to do不定式做目的状语。故填to help。
小题2:句意：我们明天会完成工作。时间状语是tomorrow，因此要用一般将来时。故填will finish。
小题3:句意：他们很惊讶看到有一个男人在里面。这里用to do不定式做原因状语，故填to see。
小题4:句意：他们能看到这个男人正在找东西。See sb doing sth“看到某人正在做某事。”故填looking。
小题5:句意：他一定是小偷。Must be表示肯定的猜测。
小题6:句意：我去报警，你试图和他讲话。将要去报警，用一般将来时。故填will report。
小题7:句意：Peter进去了而Paul冲向电话报警。and连接并列成分，因此要用过去式。故填hurried。
小题8:句意：他让我来给他拿些钱。Ask sb to do sth“让某人做某事”。故填to find。
小题9:句意：但是他被警察抓住了。时态是一般过去时，主语he与catch是被动关系，因此要用被动语态。故填was caught。
小题10:句意：我很高兴你已经抓到他了。此时已经抓到小偷美因茨要用现在完成时。故填have caught。