问题
选择题
Those natives who _________ move from place to place with their animals in the past have moved into new houses at last.
A．could
B． would
C． might
D．should
答案
答案：B
这题考查情态动词的用法：would表示“过去常常”，句意是：那些过去带着动物从一个地方到另一个地方的当地人现在已经搬到了新家。选B。