Замените действительные обороты страдательными: you may leave all dictionaries on the table. rastrelli designed the winter palace in st-petersburg. he will mention this fact in his report.

You may leave all dictionaries on the table. - All dictionaries may be left on the table
Rastrelli designed the Winter Palace in St-Petersburg. - The Winter Palace in St. P. was designed by Rastrelli
He will mention this fact in his report. - This fact will be mentioned in his report.