--- What does the model plane look like?
---Well, the length of its wings is _______ of its body.
| A．more than twice the length | B．twice more than |
| C．more than twice that | D．twice the length |
China is developing fast.That’s________I think those of my colleagues who deal with China affairs should visit China.
| A．because | B．why |
| C．when | D．how |
Our bad living habits will destroy the earth.Only by changing________we live can we save the earth.
| A．that | B．what |
| C．how | D．where |
It was only when I reread his poems recently________I began to appreciate their beauty.
| A．until | B．that |
| C．then | D．so |
I got an email from my old friend last Sunday.Until then，we________in touch for nearly 3 years.
| A．didn’t get | B．haven’t got |
| C．hadn’t got | D．don’t get |
Many people believe that hunger is only a problem in the developing countries.________，it is a problem all over the world.
| A．For one thing | B．In addition |
| C．As well | D．On the contrary |