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While watching television,______.

A. the doorbell rang

B. the doorbell rings

C. we heard the doorbell rings

D. we heard the doorbell ring

While watching television,__________.

  A.the doorbell rang             B.the doorbell rings

  C.we heard the doorbell ring     D.we heard the door bell rings

While watching television,__________.

  A.the doorbell rang             B.the doorbell rings

  C.we heard the doorbell ring     D.we heard the door bell rings

 While watching television, _________.

A. the doorbell rang                     B. the doorbell rings

C. we heard the doorbell ring              D. we heard the doorbell rings

 While watching television, _______.

  A. the doorbell rang.

  B. the doorbell rings.

  C. we heard the doorbell ring.

  D. we heard the doorbell rings.

While watching television,________________________.

A. the doorbell rang                     B. the doorbell rings

C. we heard the doorbell ring             D. we heard the doorbell rings

 While watching television,__________.

A. the doorbell rang             B. the doorbell rings

C. we heard the doorbell ring     we heard the door bell rings