in the days the students were kept busy collecting information to write the reportIn the days____,the students were kept busy collecting information to write the report.A.to be followed B.that followed C.follow D.to be following为什么选B?A为什

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in the days the students were kept busy collecting information to write the reportIn the days____,the students were kept busy collecting information to write the report.A.to be followed B.that followed C.follow D.to be following为什么选B?A为什
in the days the students were kept busy collecting information to write the report
In the days____,the students were kept busy collecting information to write the report.
A.to be followed B.that followed C.follow D.to be following
为什么选B?A为什么不可以?

in the days the students were kept busy collecting information to write the reportIn the days____,the students were kept busy collecting information to write the report.A.to be followed B.that followed C.follow D.to be following为什么选B?A为什
不定式表示将来的时间(事情将会发生),原文描述的事实已经是过去了