I recently purchased a robot vacuum cleaner. It is a compact, disc-shaped machine (37) ______. It can move around spaces and avoid obstacles like furniture, walls, and stairs thanks to an array of sensors. My robot vacuums up dirt and debris from carpets, rugs, and hard floors using suction power and rotating brushes.
My robot is programmed to operate according to a set timetable, allowing it to clean my house while I am away. The robot is equipped with a charging dock, (38) ______.
(39) ______. In addition to receiving notifications and updates on the robot's cleaning progress, these features enable me to start, stop, and schedule cleaning sessions remotely.
(40) ______. It gives me a hands-free way to keep my house clean and tidy.
A. My vacuum cleaner robot also features Wi-Fi connectivity and a smartphone app for operation
B. that is designed to clean floors automatically
C. Overall, my vacuum cleaner robot is a practical and time-saving
D. which it can automatically return to when it needs to recharge its batteries
Question 37. __________