______ he talked with her for a long time, he failed to convince(说服)her.
| A．Though | B．But | C．Since | D．As |
Mr Smith usually reads a newspaperhe’s waiting for the bus.
| A．if | B．the | C．because | D．while |
Many teenagers think they ____ to play computer games on weekends.
| A．were allowed | B．should be allowed |
| C．are allowed | D．will be allowed |
The meeting is important that you mustn’t miss it. (盐城)
| A．very | B．such | C．so | D．too |
Doctor Wang operated _______my mother yesterday.
| A．in | B．at | C．for | D．on |