He spoke through a microphone , ______ he was clearly heard in the great hall.
| A．even if | B．because | C．in order that | D．so that |
．He thought she was a pretty girl_______poorly she was dressed.
| A．how | B．as though | C．as long as | D．however |
．－May I keep this book for two days?
－No, you_______. It’s a library book for reference only.
| A．may not | B．mustn’t | C．needn’t | D．shouldn’t |
She couldn’t but_______for the PLA men to find and rescue her.
| A．wait | B．waiting | C．to wait | D．to have waited |
What shall human beings do if oil_______sometime in the future?
| A．will run out | B．runs out of | C．runs out | D．will be run out |
．Chen Chunlong is a hero of _______Liaocheng can be proud.
| A．who | B．whom | C．that | D．which |