what color is this pen的回答可不可以是It's a red pen

what color is this pen的回答可不可以是It's a red pen What's color is the map?\ This's red pen.\ It's a orange jac what color is your pen A it is red B it is a red C it is a r What's this?——___.(①It's a pen.②This is pen.③This is an pen. What color is the pen?A.It's green color B.Green what is this ?It is a pen而不是It is pen.但为什么what's this? It's What is this 是This is a pen.还是.It is a pen?为什么? this is red a pen的提问 What color is this pen?是否正确? what color is ()pen What's this It's pen .为什么答句不用this is pen,到底it,that ,this 的用法 Look This is a pen and it's red .The ruler is yellow.The key