1.One of the most important questions they had to consider was____英语解答

1.One of the most important questions they had to consider was____of public heal
h.
A.what.B.this C.that.D.which
为什么选C啊

人气：333 ℃　时间：2019-09-01 11:03:59

解答

首先,was之后不是从句,所以不能选从句引导词what和which；
其次,that为指代词,其可换成天the one,为避免重复,故用that指代,而this无此用法