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5 I often visit my friend in Moscow. 6 Helen usually does her homework at 7 p.m.7 Tomorrow my mother will buy a new dress.8 Five months ago I swam in the river. 9 Yesterday he was at the zoo.10 Next summer he will be at the zoo.11 Now he is at the zoo.12 Tomorrow they will be at school. 13 I watched TV yesterday. 14 Tim drinks hot milk every day. 15 We visit friends every Sunday. 16 I am at the park now.17 Boris is at home now. 18 My friend and I were at the zoo a week ago.