during this time,they will give five performances.that's what they'll do_this time

问题描述:

during this time,they will give five performances.that's what they'll do_this time
a)in
b)on
c)for
d)while

填A,in this time.在这段时间里.理由同 deniela 的回答.
而C for this time这一次,跟题目的中心思想不一致,所以放弃.但我的答案和答案解释是矛盾的,答案解释是:“指示代词+时间”的前面不加介词。如:this month/week/term不能盲目地相信参考答案,要用自己的知识来解决问题。