However，at times this balance in nature is＿＿，resulting in anumber of possibly unforeseen effects．
| A．troubled | B．disturbed | C．confused | D．puzzled |
They _______to finish the task before July, but they didn’t make it because of the terrible weather.
| A．succeeded | B．managed | C．attempted | D．thought |
It is said that his missing books were ______the possession of his former wife and they were valued____500,000$
| A．in ; to | B．in; at | C．under; at | D．to; for |
Tom is a stubborn and careful man; It took many hours to_______ him of my good idea and to give up his.
| A．ask | B．convince | C．remind | D．accuse |
The patient was warned _______ oily food after the operation.
| A．to eat not | B．eating not | C．not to eat | D．not eating |
The monitor wanted to buy two_______ stamps, but the salesgirl only sold him_______ these stamps.
| A．scores of; dozens of | B．scores; dozen of |
| C．score of; dozen of | D．score of; dozen |