_____ they are very tired, they feel happy because they’ve finally finished their project.
| A．So | B．Although | C．If | D．But |
Paul’s parents were worried that he ____ too much time chatting on line.
| A．spent | B．cost | C．paid | D．took |
We must do something to protect the earth, ____we will lose our home.
| A．and | B．or | C．so | D．but |
___ amazing the stories about memory are!
| A．What | B．What a | C．What an | D．How |
She looks as ____ as a Barbie Doll.
A carefully B. lovely C. beautifully D. sweetly
About _____of the students in our school took part in the school sports meeting last Friday.
| A．one-thirds | B．two-third | C．one-fifths | D．two-thirds |