Science is really _______ useful sucject although it is very difficult.
| A．an | B．a | C．the | D．/ |
If you watch carefully, you can see ________ the man does the trick with the cards.
| A．who | B．what | C．how | D．which |
Wars are disasters. A large number of people will lose their homes if a war ________.
| A．breaks out | B．is broken out |
| C．breaks down | D．is broken down |
The mobile phone has changed people’s life a lot ________ it was invented.
| A．until | B．since | C．before | D．after |
The girl is so excellent that you ________ praise her too much.
| A．mustn’t | B．shouldn’t |
| C．can’t | D．won’t |
Yaxi, a quiet village in Gaochun, _________ China’s first “Slow City” in November 2010.
| A．names | B．named |
| C．is named | D．was named |