Two-thirds of the land ________ covered with green grass and the rest _______ covered with pine trees.
| A．is; is | B．is; are | C．are; is | D．are; are |
The villagers, ______ damaged by the flood, were given help by the International Red Cross.
| A．all whose houses | B．all their houses | C．all of whose houses | D．their all houses |
. It is necessary that whoever ______ recently visited the country ______ this kind of test.
A．h as; pass |
B．has; passed | C．have; pass | D．has; passes |
His composition won first prize, ______ made him too happy to sleep for nights.
| A．what | B．that | C．which | D．where |
We are waiting ______ for your absence.
| A．your explanation | B．to have your explanation |
| C．about your explanation | D．having your explanation |
With little knowledge about the area he succeeded ______ many researchers failed.
| A．the place where | B．in place | C．while | D．where |