题目
All _______ is to set a platform for coaches,trainers and volunteers involved in the project to share their personal experiences and offer practical tips for training.（ ）A. what is neededB. that is neededC. which is neededD. the thing needed
All _______ is to set a platform for coaches,trainers and volunteers involved in the project to share their personal experiences and offer practical tips for training.（ ）
A. what is needed
B. that is needed
C. which is needed
D. the thing needed
题目解答
答案
B. that is needed