Example sentences of "keep a watchful eye on [adj] " in BNC.

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1 Having narrowed the field , do a tour of the shops and try as many different models as you can , keeping a watchful eye on such things as good picture definition and colour , no picture ‘ jitter ’ ( unsteadiness ) , and good sound recording with low hiss and mechanical noise pick-up .
2 So she 'd do just the opposite , keeping him close and at the same time keeping a watchful eye on all he was doing .
3 There is a further constraint in that the Ministry of Defence will keep a watchful eye on any potential partner or owner .
4 The milkmen have been watching out for customers who lay their part in the community , are good neighbour , keep a watchful eye on elderly residents , or putting nuts out for the birds .
5 She kept a watchful eye on any leaks that might have sprung .
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