( C )One of the most important questions they had to consider was ____of public health.

问题描述:

( C )One of the most important questions they had to consider was ____of public health.
A.what B.this C.thatD.which
为什么选C,整句话可不可以直接说One of the most important questions they had to consider was public health.又为什么呢?
(A )Being a parent is not always easy and being parent of a child with special needs often carries with____extra stress.
A.it B.themC.one D.him

( C )One of the most important questions they had to consider was ____of public health.A.what B.this C.thatD.which为什么选C,整句话可不可以直接说One of the most important questions they had to consider...