He made up his mind to devote his life _____ pollution ______happily．
| A．to prevent; to live | B．to prevent; from living |
| C．to preventing; to live | D．to preventing; from living |
68. When the boy playing by the river fell into the river, I was out of the room _______.
| A．in flash | B．in a flash | C．as a flash | D．for a flash |
67. The Prime Minister was more fit __________ his office than anyone else.
| A．for | B．to | C．with | D．Of |
66. When the good news that our football team won the championship, the hall was at once _______ great joy.
| A．filled of | B．full with | C．filled with | D．fill with |
65. Two dogs ______ a bone, and a third runs away with it.
| A．fight back | B．fight with | C．fight against | D．fight for |
64. They hurried away _____ fear that should be caught in rain.
| A．in | B．for | C．at | D．On |