18．_______ the fact that cigarette ends spoil the beauty of the environment, they contain some very toxic chemicals.

　 A．In spite　 　　　　 B．Although　 　　　 C．Apart from　　 　 D．While

17．Mr Carr is a teacher who is always laughing, and he make ______ to come to school.

　 A．fun　　 　　　　　　　 B．funny　　 　　　　　 C．it funny　 　　　　 D．it fun

16．The burning of more fossil fuels has ______ the increase in carbon dioxide.

　 A．kept on　　 　　　　 B．depended on　 　 C．put up with　 　　 D．resulted in

15．It’s OK to _______ an electrical appliance on so long as you are using it.

　 A．leave　 　　　　　 B．make　 　　　　　 C．turn　 　　　　　　 D．open

14．It's imagination _____ the world colourful.

　 A．in making　　 　 B．that making　　 　 C．make　 　　　　　　 D．that makes

13．You cannot tell _____ looking at someone whether or not they have HIV.

　 A．without 　　　　　 B．though 　　　　　 C．by　　 　　　　　　　 D．with

12．- Do you like ______ here?

- Oh, yes. The air, the weather, the way of life. Everything is so nice.　　　

　 A．this　　　　　 　 B．it　　　　　 　　　 C．that　　　　 　　　 D．these

11．Learn some relaxation exercises and do them every time you feel ______.

　 A．stressful　　 　　 B．stressed　　 　　　　 C．ashamed　　 　　 D．impressed

10．Many young people don’t work hard, and regret it later when the opportunity is gone. They only realize it _______ it is too late.

　 A．when　　　 　　　　 B．before　　　 　　　 C．in case　 　　　　　 D．until

9．Everybody needs calcium, but it is quite possible for a similar person to be totally healthy by eating only ________.

　 A．as half much　 　 B．as much half　 　　 C．half as much as 　 D．half as much