The experiment the discovery of a cure for cancer.
| A．resulted in | B．resulted from |
| C．brought in | D．ended in |
The home improvements have taken what little there is ______ my spare time.
| A．from | B．in | C．of | D．at |
In order to prevent the disease ___________ to other districts, the authorized organization killed thousands and thousands of cows.
| A．extending | B．spreading | C．expanding | D．stretching |
These seats are __________ for the elderly and disabled.
| A．observed | B．deserved | C．preserved | D．reserved |
Mr. and Mrs. White are determined to give their children ____ first-rate education, though they are both out of ____ work now.
| A．a, the | B．the, the | C．a, / | D．the, / |
________ for the free ticket, I would not have gone to the theatre so often.
| A．Were it not | B．Had it not been | C．Had not it been | D．Were not it |