选出正确的句子补全对话。A. Okay.B. It's orange.C. What colour is it?A: I have a new pen.B: A: It's yellow.B: What colour is your pencil box?A: B: Open it! Let's look.A: 答案:【1】C【2】B【3】ABelieve it or not, _____ did I hear it, but also saw it.A.as wellB.not onlyC.never beforeD.only if