Question

【题目】Teenagers should ______ to take care of themselves from a young age.
A.teach
B.be teaching
C.have taught
D.be taught

Answer 1

【答案】D
【解析】句意：青少年在小时候就应该被教会照顾自己。本题考查情态动词的被动语态，其结构是：情态动词+be+动词的过去分词。故选D。