going to talk about the geography of his country with me, but I’d rather he __________ (focus) on its culture.Р37。 The doctor claimed to __________ (cure) over a hundred patients with similar disease， which I personally doubt very much.Р38。 If all of you still have something that you don't understand， I am happy to __________ (说明） any points that are still unclear.Р39。 The last decade _______________ (witness） a boom in the advertising industry and it is now playing an increasingly important role in national economies.Р40. No drug is free from risk and all medicines have side effects， __________ which some might be rather serious or even deadly。 (of； in； with； from)Р41. —-- How long do you suppose it is _________ he arrived here? (when; since； before; after）?Р--— No more than ten minutes．
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