His mother had been trying to teach him to ______.
举一反三
- Mark had finished his homework. His mother then let him go out to play.（用 once改写句子 ） , his mother let him go out to play.
- His mother had rarely him or any of her other children.
- He returned from abroad ______________ that his mother had been badly ill.
- A smiling policeman told him and his bicycle had been found.
- He is ( ) his mother to take care of the twins for him; she’s had plenty of experience with children.