How many groups____ they ____ (divide) into in tomorrow's competition?

问题描述:

How many groups____ they ____ (divide) into in tomorrow's competition?
还有:Oil ____(catch) fire easily.

will divide
catches不应该是will be divided 吗?我觉得是被动语态呀?不好意思,divide 有被动,你是对的。

willbe divided