Question

【题目】—Don't throw away the waste paper.
—It needs __________ so that it can be reused.
A.to destroy
B.destroying
C.to collect
D.collecting

Answer 1

【答案】D
【解析】当need主语为物时，用sth need doing或sth need to be done，故排除A，C，D。句意：—不要乱扔废纸。—废纸需要被收集以便被重复使用。 故选D。