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7St Petersburg is visited by a lot of tourists in summer.
8This letter will be sent by us immediately.
9I was  told  that the book had been bought by him two days before.
10The test will have been finished by our laboratory by the end of the next week.
11When we came there  a report was being  made by Professor B.
12This text has just been translated by the students.

7 St Petersburg is visited by a lot of tourists in summer.
8 This letter will be immediately sent by us.
9 I was told that the book had been bought by him two days before.
10 The test will have been finished by our laboratory by the end of the next week.
11 When we came there a report was being мейд by Professor B.
12 This text has just been translated by the students.