_____is important for us _______sports every day
| A．It； do | B．That； to do |
| C．This； to do | D．It； to do. |
— Excuse me, can I interview Mr White?
— A moment, please. Let me check ________.
| A．if Mr White will be free |
| B．when will Mr White have time |
| C．if Mr White was busy |
| D．when does Mr White come back |
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 |