The crazy fans___________ patiently for two hours, and they will wait till the movie star arrives.
| A．are waiting | B．had waited |
| C．have been waiting | D．will wait |
There is nothing more I can try ______ you to stay, so I wish you good luck.
| A．being persuaded | B．persuading | C．to be persuaded | D．to persuade |
After a knock at the door, the child heard his mother’s voice ______ him.
| A．calling | B．called | C．being called | D．to call |
The little boy came riding full speed down the motorway on his bicycle. ______ it was!
| A．What a dangerous scene | B．What dangerous a scene |
| C．How a dangerous scene | D．How dangerous the scene |
--- How was the televised debate last night?
--- Super! Rarely ______ so much media attention.
| A．a debate attracted | B．did a debate attract |
| C．a debate did attract | D．attracted a debate |
With the help of high technology, more and more new substances ______ in the past years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |