問題詳情:
WWF ______ a great green organization for many volunteers to protect the animals.
A. considers B. is considered C. has considered D. is considering
【回答】
*:B
解析:WWF被認為是一個……,在本句中使用被動語態。正確形式應為is considered。
知識點:動詞語態
題型:選擇題