Example sentences of "[was/were] [verb] [adv] [prep] a period " in BNC.
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1 | Twenty , 50 or 100 mg were infused intravenously over a period of 90 minutes . |
2 | Eight patients of group 1 and seven patients of group 2 were followed up for a period of >3 years ( mean follow up 47 ( range 37–60 ) months for both groups ) . |
3 | Does it matter , though , for literary criticism whether the poetry was formed out of a period of rebellion or revolution ? |
4 | The solution was to add a form of the hormone progesterone so that the lining was shed not as a period but as an artificial withdrawal bleed . |
5 | Much of the distribution of population was built up in a period when British industry enjoyed competitive supremacy in international trade . |
6 | He was very soon found to be a satisfactory workman , and was engaged initially for a period of 2 years . |