Do it as ＿＿.
| A．tell to | B．told about | C．telling to | D．told to |
Good ways of doing things can help us save time, and _____ it’s necessary for us to find them.
| A．otherwise | B．furthermore | C．therefore | D．moreover |
Tom____ me your secret, but he meant no harm.
| A．oughtn’t to have told | B．shouldn’t tell |
| C．shouldn’t be telling | D．ought not to tell |
It’s really a great pity that the great writer died ____ his works unfinished.
| A．for | B．with | C．from | D．of |
It is hoped that there will be ____ time in the future when ____ man can defeat cancer.
| A．a; the | B．a; 不填 | C．不填; the | D．不填; 不填 |
Scientists warn us _____ the need to keep an eye ____ the greenhouse effect.
| A．to; in | B．of; to | C．in; on | D．of; on |