The new technology，if ________ to farming，will help increase the grain output.
| A．applying | B．to apply |
| C．applied | D．having applied |
.I wish I_________ longer this morning,but I had to get up and come to class.
| A．could have slept | B．slept |
| C．might have slept | D．have slept |
We _________ our breakfast when an old man came to the door.
| A．just have had | B．have just had |
| C．just had | D．had just had |
_________with the size of the whole earth,the highest mountain does not seem high at all.
| A．When compared | B．Compare |
| C．While comparing | D．Comparing |
The bridge was named_________ the hero who gave his life for the cause of the people.
| A．after | B．with | C．by | D．from |
.The harder you_________,the better progress you_________.
| A．will work;will make |
| B．work;have made |
| C．work; will make |
| D．will work; make |