As is so often pointed out,knowledge is a two-edged sword which can be used____for good or evil
| A．similarly |
| B．widely |
| C．equally |
| D．properly |
The theory he had stuck ______ to be true.
| A．proved |
| B．to proving |
| C．to prove |
| D．to proved |
He did better in the exam not only than ______ m his own class but also than______in mine.
| A．any other student;any student |
| B．anybody; anybody |
| C．anybody; anybody else |
| D．the other;others |
He began to ______because every means ______ tried already.
| A．lose heart; has been |
| B．lose heart; had been |
| C．lose his heart; was |
| D．lose his heart; had |
It’s said that the old lady died______.
| A．happily |
| B．happy |
| C．happiness |
| D．of happiness |
______ water to grow is well known.
| A．That trees need |
| B．These trees need |
| C．That tree needs |
| D．Trees need |