--- What made Bill so angry?
--- _____. His girl friend promised to come at 8:30, but she hasn’t come yet.
| A．Having kept waiting | B．Being kept waiting |
| C．To be kept waiting | D．Being kept waited |
It's reported that by the end of this month the output of cement in the factory _____ by about 10%.
| A．will have risen | B．has risen | C．has been risen | D．will be rising |
Active reading will result in a better understanding of what _____.
| A．is being read | B．to be read | C．to read | D．being read |
The fifth generation computers, with artificial intelligence, _____ and perfected now.
| A．developed | B．have developed |
| C．are being developed | D．will have been developed |
This kind of glasses manufactured by experienced craftsmen _____ comfortably.
| A．is worn | B．wears | C．wearing | D．are worn |
While people may refer to television for up-to-the-minute news, it is unlikely that television _____ the newspaper completely.
| A．replaced | B．have replaced | C．replace | D．will replace |