请根据中文提示，用词组的适当形式填空，每空一词。（2.5分）
【小题1】We ______ the woman ______(错把----当作---)our English teacher yesterday .
【小题2】He _________ his bag ________ (用---填满) books just now .
【小题3】 Computers are widely used in people’s ________ ________ ( 日常生活 )
【小题4】We’re _________ _________ (考虑) where to go for the winter holiday .
【小题5】_______ _______ (实际上) , he is a good doctor.

根据中文意思完成句子。
【小题1】课间，你们最好去室外散散步。
__________go out for a walk during the break.
【小题2】在日常生活中，向雷锋学习对我们来说是有益的。
____________learn from Lei Feng in our daily life.
【小题3】我刚才看到他们正在操场上跑步。
I ____________________on the playground just now.
【小题4】玛丽检查得很仔细，在考试中她没犯任何错误。
Mary checked so carefully __________________________in the test.
【小题5】恐怕这场大雨将迫使他们把运动会推迟到下周。
I’m afraid that _______________________________.

阅读下面的短文．并根据短文后的要求答题。

Since 1850．the temperature of Earth’s surface has increased about 0.6°C．Scientists predict it may warm much more by the end of this century．Who’s turning up the heat? Well, it seems that we are! Some of this global warming may be natural．However，nearly all scientists now agree that most of it is due to peoples actions．Over the past 150 years, we've added huge amounts of certain gases, especially carbon dioxide（CO2）to the air．These gases can keep heat near Earth's surface，so more carbon dioxide means more heat is kept near Earth's surface．Global warming may change the weather in ways that lead to more severe storms，floods and droughts．

We add carbon dioxide to the air when we burn things, especially fossil fuels．Fossil fuels are energy sources formed from the remains of plants and animals that lived millions of years ago．Coal，oil，and natural gas are all fossil fuels．People in the United States and other countries started bunting large amounts of fossil fuels more than a century ago．The amount d fossil fuels being burned each year has been increasing worldwide．The more we burn，_____________________．

What can we do to help? Nowadays to live a low-carbon life is quite popular in the world． Low-carbon means to reduce the amount of carbon dioxide．Saving energy and reusing are the key words. In fact, even the simplest everyday activities can make our lives low-carbon．

1．What problem can global warming cause?（根据短文内容回答问题）

2．What are fossil fuels?（同上）

3．请将第一段中的划线句子翻译成汉语。

4．请根据第二段内容，将最后一个句子补充完整。

The more we bum，_____________________________________________.

5．请写出日常生活中的一种“低碳”行为（用英语写一个句子）。