The companies are working together to create ____ they hope will be the best means
of transport in the 21st century.
| A．that | B．what | C．which | D．who |
I have no idea ________ is better, so I took _______ of them.
| A．what, both | B．what, none | C．which, both | D．which, all |
The country has ________ too many wars.
| A．gone down | B．gone through | C．gone along | D．gone up |
---I don’t think he has found a job yet because I saw him at home just yesterday.
---________!
No problem B. Maybe
C. Exactly D. Good id
The school rules state that no child shall be allowed out of the school during the day, __________ accompanied by an adult.
| A．once | B．when | C．if | D．unless |
Now a lot of new technologies can ___________ problems in industry.
| A．be applied to solve | B．be applied to solving |
| C．apply to solve | D．apply to solving |