There are a lot of problems today which are beyond any single person’s ability to solve,and they call for united _________.
| A．force | B．efforts | C．energy | D．operations |
.He must be the person who has been late a third time this week, __________?
| A．isn’t he | B．hasn’t he | C．mustn’t he | D．must he |
.They were known as “ aborigines”, _____ “the first people of the country”.
| A．it means | B．which mean | C．that means | D．meaning |
They climbed rocks, _____rivers and settled in the valley.
| A．across | B．crossing | C．crossed | D．and crossing |
He has _______good knowledge of _____English language but not much of English history.
| A．/ ; the | B．a; the | C．/ ; / | D．the; the |
The weatherman said that it is ____ to rain, but not _____.
| A．possible; probable | B．probable; possible |
| C．possibly; probable | D．probably; possibly |