1 The police kept a watch on that house for two weeks.

2 The police are keeping a watch on his movement.

3 One of his responsibilities is to keep a watching brief on foreign broadcasts.

4 Keep a watch out for Nicki and Steve - they should be here somewhere.

5 The mother kept a watch over the sick child all night.

6 He kept a watch for sewer rats.

7 Agents appear to be mostly discreetly patrolling the muddy roads around the compound, monitoring traffic and keeping a watch.

8 Solowka is the financial expert, keeping a watch on the merchandise, wages and general tour costs.

9 She appointed officers, kept a watch over financial affairs, and made sure the work was progressing smoothly.

10 Know when to stop; keep a watch on time.

11 She said all must keep a watch on the election process.

12 Keep a watch on your behaviour ; let all your ways be rightly ordered.

13 Social media is something we have to keep a watch on because it can eat into your life.

14 Filling stations are rarities: it behoves car owners to keep a watch on their reserves of petrol.

15 Justine Roberts, founder of parenting website Mumsnet, warned: 'Social media is something we have to keep a watch on because it can eat into your life.