If only the alarm clock ________ at that time. A: rang B: rings C: has rung D: had rung

I didn’t know your mobile phone number; otherwise I ____ you the moment I got to Washington。 A: have rung B: would have rung C: have rung D: will ring

30. This is the fifth time he _______ you in a week. A: ings B: ang C: had rung D: has rung

2. Listen! Someone is _______the doorbell. A: ringing B: rang C: rung

Terry was watching TV when the doorbell ______. A: was rung B: rang C: ringing

I lost your telephone number. _______ I would have rung you up long before.

What can you infer from the sentence“Tony did not begin on the bottom rung of the ladder. He began in the basement.”?

While watching television ________. A: the doorbell rang B: the doorbell was rung C: we heard the doorbell ring D: the bell of the door rang

While watching television, （） A: the telephone rang B: we heard the telephone ring C: we heard the telephone rang D: the telephone was rung

请找出划线部分发音相同的一组单词 A: run，rung B: mice，meet C: pin, ping D: thin，thing