Example sentences of "[vb past] to be kept [adv] [adj] " in BNC.

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1 Each side had to be kept reasonably satisfied .
2 But as America and Germany were still at peace , and the leasing of the pilots was a clear breach of the US Neutrality Act which Hitler , had he come to know of it , might have used as an excuse for sinking American ships , the news had to be kept strictly secret .
3 Milk vans had to be kept scrupulously clean , and were 50ft long , 8ft wide , and 7ft 10in high in the centre , carried on two standard four-wheeled bogies .
4 I remember cold days , when both back and front doors had to be kept wide open to cause a through-draught , or clear a smoke-filled room .
5 As these commodities had to be kept perfectly dry at all times the barges used were of the soundest construction and were always well maintained .
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