间接引语(英语)Gas is very popular now.It is used to cook food quickly.Gas _________________________ very popular now.

问题描述:

间接引语(英语)
Gas is very popular now.It is used to cook food quickly.
Gas _________________________ very popular now.

Gas used to cook food quickly is very popular now.

Gas which was used to cook food quickly is very popular now.

which is used to cook food quickly is