ThewholeworldisfightingagainsttheH1N1,adisease(疾病)

問題詳情：

The whole world is fighting against the H1N1, a disease(疾病) ______ has caused many deaths.

A. who          B. which         C. whom          D. what

【回答】

  B

知識點：定語從句

題型：選擇題