______ of the land in that district ______ covered with trees and grass.
I spent the whole day repairing the motorbike. The work was ____ simple.
——Why was our foreign teacher unhappy yesterday?——News about the tsunami striking her country ____ an attack of homesickness.
——Did you know any French before you arrived in Washington?——Never ____ it, actually.
If he takes on this work, he will have no choice but____an even greater challenge.
____ the pressure from work, teachers have to deal with psychological problems caused by the relationship between students.