Question

【题目】—Yesterday I bought a robot, which could help me to clean the floor.

—Really? That’s great. I’ll buy .

A. one B. it C. this D. that

Answer 1

【答案】A

【解析】句意：——昨天我买了一个机器人，它能帮助我扫地。——真的吗？那太棒了。我将要买一个。此处代指a robot，故用代词one。故选A。