The companies are working together to create _____ they hope will be the best means of transport in the 21st century.
| A．what | B．that | C．which | D．who |
Computers and mobile phones, though they are in-deed making our life _____ and more _____，have reduced the need for face-to-face communications.
| A．easily ； efficient |
| B．easier ； efficient |
| C．easy ； efficiently |
| D．easily ； efficiently |
_____ to read the lat1est novel. Which is not right?
| A．don't wait |
| B．am impatient |
| C．can't wait |
| D．can hardly wait |
Finding in-formation in today's world is easy. The _____ is how you can tell if the in-formation you get is useful or not.
| A．ability |
| B．competition |
| C．challenge |
| D．knowledge |
When the news came _____ the war broke out, he decided to serve in the army.
| A．since | B．which | C．that | D．because |
He had a wonderful childhood，_____ with his mother to all corners of the world.
| A．travel | B．to travel | C．traveled | D．traveling |