1 . If the new safety system________(put) to use, the accident would never have happened. (所给词的适当形式填空)

2 . 阅读下列句子，在空白处填入1个适当的单词或括号内单词的正确形式。
1. The shocking news made me realize __________ terrible problems we would face.
2. —The small restaurant is always crowded in every part.
—That’s __________ it has a unique dinning environment and quite a few wonderful dishes.
3. Sorry for having kept you waiting. But for the traffic jam, I __________ (arrive) 20 minutes earlier.
4. China’s Chang’e 4 robotic probe entered lunar orbit on Wednesday, __________ (mark) a major step in its mission to make a soft landing on the moon’s far side.
5. In many homes in the UK, the first person __________ (wake) up has to make tea for the family.
6. __________ (offer) the opportunity to speak at the graduation ceremony made me overjoyed.
7. —Why do you look upset?
—The electricity was cut off suddenly and my essay __________ (leave) unfinished ever since.
8. Like all parents in the world, we want you to grow up in a world __________ is full of love and kindness.
9. It was not until midnight __________ his father returned home from work.
10. As you go through this book, you __________ (find) each of the millions of people who lived through the second world war had a different experience.

3 . 根据已给的词或提示完成句子
1. Having been cheated by that company, he lost all his______ (possess).
2. My parents didn’t approve of my studying abroad and I had to accept their ___________(approve).
3. The Apollo program was not so much a scientific achievement as a ___________(technique) accomplishment.
4. She felt lucky to work as a/an _________ (assist) for the Prime Minister.
5. The ________ job _________ more patience and passion.   (demand)
6. The villagers were saved in the earthquake thanks to the proper _______(predict).
7. A teacher should not show any_______ (prefer) for any one of his pupils.
8. 如遇紧急情况，请拨打110。
____________ emergency, please dial 110.
9. 这是农民们第一次把这种新技术用在农业上。
It is the first time farmers ______ ______this new technology ________ farming.
10. 如果提前被告知你的来访，我就不会出门了。
I wouldn’t have gone out if I____ _____ ____ of your visit ____ _____ ______.
11. 他早年的经历对他后来作为一名记者的生活有很大影响。
His early experience _____ _____ ____ ______ to his later life as a journalist.
12. 只有所有的东西放在合适的地方，下次你需要时才能容易找到。
Only if everything is put_____ ______ _____ you ______ ______ _____ on them easily next time you need them.

4 . 阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Have you ever wondered where Lego(乐高积木)came from? Like many great inventions,the story is not just one of a great idea,     1     one of a ton of hard work and perseverance（毅力）.

The story started in Denmark. Ole Christiansen was a carpenter     2     was struggling with his small business. His wife died     3    (short) after his fourth son was born. He had to work hard to support his family alone. He started making wood toys,but they didn't sell well. He decided his toys needed a name,and he chose     4     name"Lego".

Unfortunately, several years later, his workshop     5     (burn) to the ground. Soon,he started to make a few plastic toys. He got the idea to create a “system" of toys that would build up kids'     6     (imagine) and creativity. He decided to stop     7     (make) wood toys and focus only on the connected plastic toys. Then he started to build more and more kinds of     8     (model). Each one had to be of the     9     (high) quality, which can be reflected in Lego's motto —“Only the best is good enough. ”

Thanks to their perseverance, kids can enjoy Lego toys, movies, amusement parks and clothing. But none of this would have existed at that time if they     10     (give up) when times got hard.