题目内容
13．When I entered the classroom，theywere talking （talk） about their teacher．分析 当我走进教室时，他们正在谈论他们的老师．
解答 答案：were talking
根据句中的时间状语为When I entered the classroom，"当我走进教室时"可知该句强调的是过去某个时间正在进行和发生的动作，故确定为过去进行时，其结构为was/were+现在分词，根据主语为they，故助动词用were，talk 的现在分词为talking，故答案为：were talking
点评 本题考查用所给单词的适当形式填空，首先要根据语境明确句意，然后再根据相关语法对所给单词在形式上做出正确的变化．
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| catch； | as far as； | allow； | city； | in danger； |
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62．As far asI remember，he was my classmate in my primary school．
63．Recently，thecity'spopulation is increasing quickly．
64．This maths problem is too difficultto work out for us．
65．I'm sorry I can't join you in thediscussion
66．Remember，nobodyis allowedto eat or drink in the computer room．
67．I studiedup totwelve o'clock last night．
68．At last，the policeman managedto catchthe thief．
69．The little boy was hurt so badly that his life wasin danger
70．Many animals don't have a safe place to live，because villages and farms are growing bigger and their land and forestsare being taken away．