题目： _____ still needs to be discussed.
2020-02-26
A. How is the plan to be carried out
B. How the plan is to be carried out
C. Why is the plan carried out
D. Why the plan carried out
正确答案：B
试题解析：
A. How is the plan to be carried out
B. How the plan is to be carried out
C. Why is the plan carried out
D. Why the plan carried out
正确答案：B
试题解析：
