The climbers _____ their ambition by reaching the summit of the mountain.
| A．obtained | B．sustained | C．maintained | D．realized |
How did you manage to get to the school on time _________you missed the school bus?
| A．when | B．if | C．once | D．because |
—What do you think of Mrs. Smith?
—She is _______ of a good housewife, for her children’s room is always a terrible mess.
| A．nobody | B．somebody |
| C．something | D．nothing |
The charity sale our school organizes every year has taught us much. _______ we would never have learned it in class.
| A．Therefore | B．Meanwhile |
| C．Otherwise | D．Instead |
As is known to all, Montreal is the second largest French-speaking city in the world, _____.
| A．Paris is the largest | B．Paris the largest |
| C．Paris to be the largest | D．Paris be the largest |
Chinese vessels ________ 646,000 square kilometers in the southern Indian Ocean in search of the missing Malaysian flight MH370.
| A．have covered | B．have looked |
| C．have travelled | D．have reached |