The theory most scientists objected to in the end .
| A．being proved to be of significance | B．was proved to be significance |
| C．proving to be significant | D．proved to be significant |
This is not an economical way to get more water; ________, it is very expensive.
| A．in return | B．on the other hand | C．in a word | D．on the contrary |
—Which of these two books will you take？
—I’ll take ______, in case the journey is boring.
| A．either | B．both | C．all | D．neither |
I know this is not quite the right word, but I can’t be bothered to think of _____.
| A．a better | B．a best | C．the better one | D．the good one |
His landlady gave him a week's _____ to leave the flat.
| A．threat | B．notice | C．advice | D．information |
He is not______. He is the______ man in the streets.
| A．somebody; average | B．somebody; common | C．something; ordinary | D．anyone; general |