【题目】Last year, part of Southeast Asia was struck by floods, from ________ effects the people are still suffering．
A.that
B.whose
C.which
D.what

【答案】B
【解析】句意：去年，东南亚部分地区被洪水袭击，人们现在仍受到它（指洪水）的影响。空格所在句子是非限制性定语从句，关系词是floods，选择关系代词whose，修饰限制effects，表示“洪水的影响”，所以答案是B。