. _______ different kinds of pianos, the workers farther improved their quality.
| A．To produce | B．Being produced | C．Produced | D．Having produced |
Alice received an invitation from her boss,__________came as a surprise.
| A．it | B．that | C．which | D．he |
_______,parents should spend as much time as they can________with their children,thus they can influence them on the value of life.
| A．It is said;to be | B．They say;being | C．As is said;to be | D．It is said that;be |
Jennifer didn’t attend the important conference,and tha’s _________she hadn’t been gotinformed of it.
| A．why | B．the reason | C．because | D．for |
The twins are so much__________that it is difficult to tell one from the other.
| A．similar | B．equal | C．like | D．alike |
.Learning foreign languages calls for your memory,time,patience and emotions._______,it is not a simple thing.
| A．As a result | B．In conclusion | C．In general | D．After all |