Sally has studied English before., Sally studied English at school., My friend has failed the maths exam twice., My friend failed his exam last year., Has Google made anything interesting?, Google has made a driverless car., In 2016 the driverless car travelled 200,000 km with no driver., What films have you seen recently?, I haven't seen any films since a year ago., I called you again at eight this morning., I have called you five times today!, Did you go to work yesterday., I haven't been to work all week.,

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