71.   In about half an hour, Matthew said, looking pleased.

72.   Always used to be half term, but Milvia it can only be half an hour!

73.   If he did two miles in half an hour, how far would he go in one hour?

74.   Well we were trying to remember the lines to that and she came in and for about half an hour she gave a rendition.

75.   Guido disappeared for nearly half an hour.

76.   Half an hour later, the deluge became a steady downpour with no sign of lifting.

77.   She was in the staff lounge making herself a drink when he came in half an hour later.

78.   For half an hour they talked over student days and student friends and then there was a long pause.

79.   The call lasted half an hour.

80.   Regulations stipulate they must be able to withstand heat of up to eight hundred and fifty degrees for at least half an hour.