二、根据要求完成下列各题，每空一词。
1. If you review the old knowledge, you will have new ideas.（改为祈使句）
the old knowledge, you will have new ideas.
2. My favourite story character is Sun Wukong.（对画线部分提问）
favourite story character?
3. The route was difficult, but he found joy in experiencing new cultures.（改为同义句）
the route was difficult, he found joy in experiencing new cultures.
4. A strong aftershock happened about 40 minutes later.（改为一般疑问句并作否定回答）
— a strong aftershock about 40 minutes later?
—No, .
5. The hurricane started from Florida last month.（对画线部分提问）
the hurricane last month?

1. Review; and
2. Who is your
3. Although/Though
4. Did; happen; it didn't
5. Where did; start

1. 该题考查条件状语从句转祈使句的固定结构：“祈使句 + and + 陈述句”可替换原if引导的条件状语从句表顺承逻辑，祈使句以动词原形开头，因此第一空用review的原形，第二空用and连接分句。
2. 该题考查对人物提问的特殊疑问句构成：划线部分是人物，用特殊疑问词who引导疑问句，原句第一人称my需转换为第二人称your，将be动词is提前，符合三个空的要求。
3. 该题考查同义句转换：原句but表转折逻辑，可用Though/Although引导让步状语从句，表达“尽管路线很艰难，他仍在体验新文化中获得乐趣”的含义，语义不变。
4. 该题考查一般过去时的一般疑问句及否定回答：原句谓语动词是过去式happened，变一般疑问句需在句首加助动词Did，后面的谓语动词变回原形happen；否定回答中，指代事物的主语用it，结构为No, it didn't。
5. 该题考查对地点状语提问的特殊疑问句：划线部分表地点，用特殊疑问词Where引导，原句为一般过去时，需借助助动词did，后面谓语动词变回原形start，符合题目三个空的要求。

阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整。每空限填一词，每词限用一次。
when, death, rise, learn, dangerous, preparation, uny, warn, flow, usual
Floods have hit many areas in recent years. One of the main reasons is 1. weather conditions. Because of climate change, rainstorms are becoming more frequent. Some areas get much more rain than before. Rivers and lakes often 2. quickly, leading to serious floods. The water can destroy houses and roads, bringing great trouble to people's lives.
Human activities also affect it. For example, 3. people cut down too many trees, the soil loses protection. As a result, rainwater 4. faster, making floods worse. Some people even build houses in low areas. This is really 5. .
During floods, the power supply often goes out. 6. , many families may get stuck in their homes. What's worse, floods can even cause some 7. .
However, we can reduce the risks. Making early 8. is important. We should follow the plans when weather reports 9. us about coming floods. Since floods can come suddenly, 10. to stay safe is necessary for everyone.

1. unusual
2. rise
3. when
4. flows
5. dangerous
6. Unluckily
7. deaths
8. preparations
9. warn
10. learning

我们逐空结合语境和语法分析：
1. 此处修饰名词weather conditions，结合句意“洪水频发的主要原因之一是反常的天气状况”，将usual变为否定形式unusual，意为“不寻常的、反常的”。
2. 此处作谓语，结合句意“河湖水位经常快速上涨，引发严重洪灾”，主语Rivers and lakes是复数，often提示用一般现在时，填动词原形rise。
3. 此处引导时间状语从句，句意为“例如，当人们砍伐过多树木时，土壤失去保护”，填连词when。
4. 此处作谓语，结合句意“结果雨水流动得更快，让洪灾更严重”，主语rainwater是不可数名词，时态为一般现在时，动词flow变为第三人称单数形式flows。
5. 此处作表语，结合句意“有些人甚至在低洼区域建房，这真的很危险”，填形容词dangerous。
6. 此处放在句首作状语修饰整个句子，句意为“不幸的是，很多家庭可能被困在家中”，将形容词unlucky变为副词Unluckily，句首首字母大写。
7. 此处作宾语，句意为“更糟糕的是，洪水甚至会造成一些死亡事件”，some后接可数名词复数，death变为复数形式deaths。
8. 此处对应固定搭配make preparations，意为“做准备”，句意为“提前做好准备很重要”，preparation变为复数preparations。
9. 此处作谓语，句意为“当天气预报警告我们即将到来的洪水时，我们应该遵从预案”，主语weather reports是复数，时态为一般现在时，填动词原形warn。
10. 此处作句子主语，需要用动名词形式，句意为“由于洪水可能突然来袭，学习保障自身安全对每个人来说都很有必要”，动词learn变为动名词learning。