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Translate word-combinations. Mind prepositions. Make the sentences with them
of: the pressure of water, to speak of something, one of them
to: to show to the students, to go to the plant, to turn to the right
by: to operate by hand, to speak by telephone, by means of a battery, to sit by the window
with: to illustrate with tables, to write with a pencil, a tube with water, to speak with our friends
about: to speak about the lecture, to do about 15 experiments.