公共英语考试

试题来源：公共英语一级-213
【单选题】 The book is ______ a great help to English learners. [A] thought (认为,考虑) to be [B] thinking [C] thinking to be

参考答案：A
网考网解析：
应该用被动语态be thought to be被认为... 查看试题解析出处>>