根据短文内容和所给中文提示，写出空白处各单词的正确形式。每空限填一词。
April 22nd is Earth Day, a special day to learn about our earth and how to take care of it. People all over the world take time out to (保护）the earth.
On that day, some people listen to speeches about environment. (其余的）help clean up their offices or save
(水）and electricity at home. Your parents may even
(决定）to take a day off from driving the cars.
The idea for Earth Day came from a US officer, who was (担心）about pollution and the health of
(植物）and animals. And it
(迅速地）spread（推广）. In 1970, the first Earth Day was celebrated. More than 20
(百万）people in cities all over the U.S. took part in it.
(自从)then, Earth Day has been used to educated people about the role in taking care of our planet.
Now, Earth Day has (变成）a global celebration.
根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。
disappear argue not be reply explain Mr. Wu is very patient. He always ____________ things to us for a long time.
--- ____________ your penfriend ____________ to your e-mail?
--- No, not yet. Animals ____________ faster and faster at present and we should take actions to make
more people realize the importance of protecting animals. Miss Wang hopes we ____________ late for school again.
---Where are the children?
---They____________ about what TV programmes to watch in the sitting room.
根据句意、释义或中文提示,写出句中所缺单词，使句子通顺。His parents are angry at his school work. They can’t see his ____________ (进步)after each exam.
I don’t know ____________ ( if ) I will have time to join in some activities at school.
Sometimes, I want to ____________ (say that you will not do something) to do so much homework.
Orange and yellow are warm colours, they can give you a happy and ____________ (满意的) feeling.
Peter is doing an ____________ in the laboratory now.
根据短文内容和首字母提示，填写所缺单词。
The development of the English language took a giant step in 1607. Three small British ships c【小题1】 the Atlantic Ocean. They began to call areas of their new land by words borrowed from the native people. For example, many of the great r【小题2】 in the United States are taken from American Indian words. The Mississippi, the Tennessee, the Missouri are examples. This borrowing or adding of foreign words to English was a w【小题3】of expanding（扩大）the language. The names of three days of the week are good examples of this. The people from Northern Europe honored three gods with a special day each week. The gods were Odin, Thor and Freya. Odin’s-day became Wednesday in English, Thor’s-day became T【小题4】 and Freya’s-day became Friday.
Experts cannot explain many English words. For h【小题5】 of years, a dog was called a “hound.” The word is still u【小题6】 but not as commonly as the word “dog.” English speakers just started using it. Other words whose origins are unknown i【小题7】“fun,” “bad,” and “big.”
English speakers also continue to invent n【小题8】 words by linking old words together. A good example is the words “motor” and “hotel.” Many years ago
s【小题9】 linked them together into the word “motel.” A motel is a small hotel near a road where people travelling in cars can stay for the night.
Other words come from the f【小题10】 letters of names of groups or devices. For example, the North Atlantic Treaty Organization is usually called NATO.
根据句子意思用括号中所给单词的适当形式填空。Dad, Mum asked you and ________ (I) to do the cleaning at home today.
To our surprise, an excellent student ______(murder) by his roommate in a university.
Don't drink the ____________(pollute) water. It will make you ill.
I can’t stop ______(take) photos at this tourist attraction. I have no enough time.
The terrible traffic accident happened because the truck driver was so _______ (care) that he didn’t notice the sign of speed.
根据括号中所给的汉语写出英文单词，使句子意思完整正确。Nowadays, few young people want to buy _________(收音机). They can use their mobile phones to listen to music.
The hall was (拥挤的) because many students and their parents came to attend the farewell party.
I live on the (第二十一) floor of a tall building in the centre of the city.
They kept working in the field though it rained ___________ (猛烈地).
My family has _______(计划) to go on a trip to Hainan this summer vacation.
The reporters gathered around at once in order to interview the (幸存者) relatives.