语法填空
阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。(共10小题,每小题1分)
Great inventions change the world. They help people live a better life. The following ________(be) three of the most important inventions in history.
The wheel may be the greatest invention in history. Travelling became faster and __________(comfortable) after its invention. Several thousand years ago, people started to use wheels on carriages. In ___
__ early 19th century, the first trains began to carry passengers. ____
___ the wheel, we would not have these inventions.
One of the first ________(practice) telephones was invented by Alexander Graham Bell in1876. Since then, people have been able to speak to each other over long distances. Today _____
_____(million) of people across the world own mobile phones. They allow people ___
______(keep) in touch with each other anytime , anywhere.
Thomas Edison developed the first useful light bulb in 1879. With light bulbs, people can do as many things in the evenings _____ they can in the daytime. Can you imagine ______
_____(live) a life without _____
_____(they)?