问题
选择题
---At present, one of the best ways to study is working in groups.
---More chances _______ to students to learn from each other.
A．offer
B．are offered
C．have offered
D．are offering
答案
答案：B
题目分析：句意：目前，最好的学习方式之一就是小组学习。提供给学生彼此学习的更多的机会。动作的承受者作主语，用被动语态。其结构是，主语+be+done.根据句意，故选B