---The telephone is ringing. ----I _____ answer it.
---The telephone is ringing. ----I _____ answer it.
When should you pick up the phone? A: After ringing once. B: After ringing twice. C: After ringing three times. D: After ringing four times.
When should you pick up the phone? A: After ringing once. B: After ringing twice. C: After ringing three times. D: After ringing four times.
He is mowing the lawn ____________ the fire alarm begins ringing.
He is mowing the lawn ____________ the fire alarm begins ringing.
中国大学MOOC: Dear, the phone is ringing. Could you it?
中国大学MOOC: Dear, the phone is ringing. Could you it?
Jack<br/>was reading a book when the phone ____. A: ringing B: ring C: rang D: was ringing E: was ring
Jack<br/>was reading a book when the phone ____. A: ringing B: ring C: rang D: was ringing E: was ring
While watching TV, ______. A: the telephone rang B: the telephone was ringing C: the telephone was heard ring D: I heard the phone ringing
While watching TV, ______. A: the telephone rang B: the telephone was ringing C: the telephone was heard ring D: I heard the phone ringing
Someone is ringing the doorbell Go and see________.
Someone is ringing the doorbell Go and see________.
(1)Clara is ringing Sue at home.
(1)Clara is ringing Sue at home.
He hates ________ the phone, and very often just lets it________. A: to answer; ringing B: answering; ring C: to answer; to ring D: answering; ringing
He hates ________ the phone, and very often just lets it________. A: to answer; ringing B: answering; ring C: to answer; to ring D: answering; ringing
Gaussian lowpass filter has ringing properties.
Gaussian lowpass filter has ringing properties.