(2009·湖北) As there is less and less coal and oil, scientists are exploring new ways of making use of __________ energy, such as sunlight, wind and water for power and fuel.
| A．primary |
| B．alternative |
| C．instant |
| D．unique |
--- Hi, Timmy. I’m going to Kitty’s party.
--- ________.
| A．Have fun | B．Take care | C．No problem | D．Best wishes |
The number of people invited ____ fifty, but a number of them ___ absent for different reason.
| A．were; was | B．was; was | C．were; were | D．was; were |
In order to get good marks, he has changed his attitude ______ study.
| A．about | B．of | C．to | D．on |
There is no ____ that 100 years ago animal testing was cruel, but today animals in experiments are very well taken care of.
| A．point | B．wonder | C．use | D．doubt |
He was about to make a call to Tom _____ Tom patted me on the shoulder.
| A．as | B．until | C．while | D．when |