Scientists are trying to develop a special material, _______ they will make use of in space.
| A．it | B．that | C．what | D．one |
John has really got the job because he showed me the official letter ______ him it.
| A．offered | B．offering | C．to offer | D．to be offered |
—May I help you?
— Yes, I’d like to try on some sports jackets just like ______ I’m wearing.
| A．it | B．one | C．the one | D．which |
With all the money ______, the man had to make a living by begging.
| A．run out | B．to run out | C．used up | D．to use up |
No sooner had he arrived than he ______ to complain about the terrible weather.
| A．began | B．would begin | C．had begun | D．begins |
The measure has saved many rare animals which would ______ have died out.
| A．therefore | B．anyhow | C．furthermore | D．otherwise |