Those pens are (black)?(对括号部分进行提问) ___ ___are those pens?

问题描述:

Those pens are (black)?(对括号部分进行提问) ___ ___are those pens?

( What colours ) are those pens?追问:( What colors ) are those pens?可以改成这个么?回答:colors = colours 英美法 不同而已