---It was who helped us out of danger.---What brave and helpful children! We should learn

问题补充：

---It was who helped us out of danger.

---What brave and helpful children! We should learn from them.

A. they

B. them

C. their

D. theirs

答案：

(答案→)A. they

B. them

C. their

D. theirs

解析：根据题干，这是一个强调句，强调主语！ 英语中为了表达的正式，这时应用主格的代词。本句的意思是“就是他帮我们脱离的危险。”所以本题选B。