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：根据语境可知用被动语态。Be done的结构句意 ：---目前，做好的学习方式之一就是小组合作，给学生们提供更多的的学习的机会。根据题意故选B.