Question

Helping animals in danger,the _____ is to stop people _____ them.

A.difference；to kill B.different；killing C.difficult；to kill D.difficulty；killing
说明原因喔

Answer 1

The difficulty is to stop people killing them.
答案为D。
difficulty是名词，指困难。
stop sb. doing sth. 阻止某人做某事。

这个句子的意思是，困难之处是阻止人们杀害他们。

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Answer 2

D
首先stop sb doing sth 停止某人正在做的事
stop sb to do sth 停止某人做另件事
所以就只剩下B跟D 然后再看differen跟difficulty意思 就只选D啦

Answer 3

D.difficulty；killing

the后面接名词
stop （from） doing，from可以忽略