High unemployment _____ the government billions of pounds in lost taxes.
| A．spends | B．takes |
| C．uses | D．costs |
－You can’t imagine _______ fantastic fun web chatting is.
－Really? But it may cause a lot of trouble sometimes.
| A．what | B．how | C．why | D．whether |
Parents are advised to take pressure_____a child and give him or her some encouragement before an exam.
| A．off | B．over | C．from | D．to |
Some people would rather ride bikes as bike riding has _______ of the troubles of taking buses.
| A．nothing | B．none | C．some | D．neither |
In America, if _______ friend has invited you to drop i
n at any time, it is _______ best to call
before visiting to make sure it is convenient for him.
| A．a; a | B．the; a | C．a; 不填 | D．the; 不填 |
People in industrial countries take in _________as they actually need every day.
| A．twice as much protein | B．protein as much twice |
| C．twice protein as much | D．protein as twice as much |