71.   Next morning my phone rang at nine forty-five.

72.   The phone had been ringing for some time.

73.   Five minutes later, the phone rang again.

74.   The phone rang half a dozen times before he answered it.

75.   When she arrived home, the phone was ringing.

76.   She was writing out a shopping-list when the phone rang.

77.   She sat down and was about to indulge in a fit of angry tears when the phone rang.

78.   The phone rang, and the operator connected him to Stockholm.

79.   I had gone to bed when the phone rang.

80.   Sometimes through the wall I hear phones ringing and muffled voices answering them.