The vacuum cleaner is a valuable labor-saving ______.
The vacuum cleaner is a valuable labor-saving ______.
Which of the following is a household robot? A: A sweeper B: A surgery robot C: A robotic vacuum cleaner D: A robotic pool cleaner
Which of the following is a household robot? A: A sweeper B: A surgery robot C: A robotic vacuum cleaner D: A robotic pool cleaner
Language belongs to each member of the society, to the cleaner ____ to the professor.
Language belongs to each member of the society, to the cleaner ____ to the professor.
The ____ are cleaning the room. A: clean B: cleaners C: cleaner
The ____ are cleaning the room. A: clean B: cleaners C: cleaner
2. Hydroelectric power plants in a much cleaner way than coalfired ones.(generate)
2. Hydroelectric power plants in a much cleaner way than coalfired ones.(generate)
The vacuum cleaner is a valuable labor-saving ______. A: device B: engine C: piece D: instrument
The vacuum cleaner is a valuable labor-saving ______. A: device B: engine C: piece D: instrument
Michael's vacuum cleaner squealed loudly, shook violently, and filled the air with dust.
Michael's vacuum cleaner squealed loudly, shook violently, and filled the air with dust.
Michael's vacuum cleaner squealed loudly, shook violently, and filled the air with dust. </p></p>
Michael's vacuum cleaner squealed loudly, shook violently, and filled the air with dust. </p></p>
Is bottled water cleaner than tap water? (8.2.1第一个视频） A: Yes B: No C: Sometimes, sometimes not
Is bottled water cleaner than tap water? (8.2.1第一个视频） A: Yes B: No C: Sometimes, sometimes not
Where do you think the woman is working A: At a restaurant. B: At a department store. C: At a hotel. D: At a cleaner’’s.
Where do you think the woman is working A: At a restaurant. B: At a department store. C: At a hotel. D: At a cleaner’’s.