$It was late in the afternoon. Lucas was studying for his Maths test when he heard his dog, Rex, (^1)$$ (bark) in the garden. Curious, he went outside to see what was wrong. As soon as he stepped outside, he smelled smoke. It was coming from his neighbour Mrs Black's kitchen window, but there was no movement in the house. Lucas guessed that something (^2)$ (usual) had happened.
$"I must get help," he thought. He (^3)$$ (quick) went back inside and called 911. Then he rushed to Mrs Black's back door, but it (^4)$$ (lock). Lucas was very worried. When he was ready (^5)$$ (break) into the house, he suddenly remembered that he could enter from somewhere else. He ran around to the other side of the house and (^6)$ (find) the big glass doors were open. He entered the house.
$It was dark inside, but Lucas didn't turn on the light because he remembered it might be (^7)$$ (danger) in case there was a fire. As he moved towards the kitchen door, he found Mrs Black (^8)$ (sleep) in an armchair. Gently, Lucas woke her up and helped her out of the house just as the fire truck arrived.
$(^9)$$ (accident) can happen every day everywhere. Although we should guard against danger as much as possible, we must also know what to do when it comes. Most importantly, we should stay calm. This way, we can ensure our (^1⁰)$ (safe) and help others at the same time.

1.barking 2.unusual 3.quickly 4.was locked 5.to break 6.found 7.dangerous 8.sleeping 9.Accidents 10.safety

1. hear sb. doing sth. 表示“听到某人正在做某事”，故填barking。
2. 根据上下文，Lucas闻到烟味且屋内没动静，推测发生了“不寻常的事”，usual的反义词为unusual，故填unusual。
3. 修饰动词went用副词，quick的副词形式为quickly，故填quickly。
4. 主语it（后门）与lock之间是被动关系，且全文时态为一般过去时，故填was locked。
5. be ready to do sth. 表示“准备做某事”，故填to break。
6. and连接并列谓语，ran为过去式，find也用过去式found，故填found。
7. be动词后接形容词作表语，danger的形容词形式为dangerous，故填dangerous。
8. find sb. doing sth. 表示“发现某人正在做某事”，故填sleeping。
9. 此处需用名词作主语，accident为可数名词，泛指“事故”用复数形式Accidents，句首首字母大写，故填Accidents。
10. our后接名词，safe的名词形式为safety，故填safety。

() 1. He told me he would go to Beijing ______ the next month.
A.sometime
B.sometimes
C.some time
D.at times

A

本题考查sometime，sometimes，some time，at times的用法区别。sometime表示“某个时候”，常用于过去或将来时态中；sometimes表示“有时”，是频度副词；some time表示“一段时间”；at times表示“有时，偶尔”，相当于sometimes。根据题干“He told me he would go to Beijing ______ the next month.”可知，此处表示“他告诉我下个月某个时候他要去北京”，应用sometime。

2. I think Tom is involved in this case because he was ______ for kidnapping three years ago.
A.in the prison
B.in prison
C.put into prison
D.both B and C

D

“in prison”表示“在监狱里（服刑）”，是固定搭配，强调状态；“put into prison”表示“被关进监狱”，强调动作。句中“three years ago”表明是过去的动作，“was put into prison”为被动语态，符合语法；同时“was in prison”也可表示过去处于服刑状态。两者在语法和语境上均正确，故D选项正确。