問題詳情
【題組】28. Which is true about the ORobot?
(A) You have to push it around to clean the house.
(B) You don't need to pay for shipping if you buy it on Mother's Day.
(C) It will cost you less than nine thousand dollars.
(D) You'd better not use a QRobot at night because it may wake your family up.
參考答案