The vacuum cleaner is a valuable labor-saving ______.
举一反三
- The vacuum cleaner is a valuable labor-saving ______. A: device B: engine C: piece D: instrument
- 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
- Michael's vacuum cleaner squealed loudly, shook violently, and filled the air with dust.
- When the author helped put together Mable's new vacuum cleaner recently, he told her that she looked bad.
- Michael’s vacuum cleaner squealed loudly, shook violently, and _____. A: filled the air with dust B: dust filled the air C: dust was filled in the air D: dust was filled with the air