1.   Before panic could set in, she realised that the clock was fast.

2.   It looked like the clock was running faster than usual.

3.   The clock is about five minutes slow.

4.   The first mechanical clocks were large and unwieldy, and there was soon a desire for smaller and more portable mechanisms.

5.   Your clocks are equally valid only if you each continue to occupy an inertial reference frame.

6.   The station clock was ten minutes slow.

7.   The clock was adapted to run on batteries.

8.   There was a clock in the stateroom, and he had a watch.

9.   And then the hubbub began to quieten down, and Shelley knew the church clock must be striking midnight.

10.   Sinclair Harding clocks has been in business for twenty five years -- exporting timepieces all over the world, even to Switzerland...