Activity 20 Complete the following text with suitable words from the box. Read the text aloud Visit three times L. sitting shape screen round Activity 21 5. percentage once duty ● 0 ● color charging brushes There is a vacuum cleaner robot in my house. It is a smart robot. You can see it when you (1) Visit my house. Its (2) is to keep the living room floor clean. (7) The robot has a white (3) cic. Its diameter is about 35 cm and it's about 8 cm high. There is an LCD (4) SD) in the middle. It shows the mode, (5) pircent of its battery, and progress of its work of It has brushes below its body. These sweeping the floor. The shape of the robot is (6) when cleaning the floor. help it vacuum dust on the floor. It produces a nice (8) dock when the battery is low. It The robot has an automatic timer. It will return to the (9) will do the same thing after cleaning. The charging dock is located at the corner of the living room. When a day, in the morning, at noon, charging, it needs between two and three hours. It operates (10) and in the evening.​