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1.i shell go for practice...May
2/my friend will go to the demonstration...the first of May
3.it is cold...winter
4.my father usually comes back home....9 o'clock in the evening
5.they went to the river...the warm day
6.i was born...1985

1.i shell go for practice.in..May
2/my friend will go to the demonstration.on..the first of May
3.it is cold.in..winter
4.my father usually comes back home..at..9 o'clock in the evening
5.they went to the river.on..the warm day
6.i was born.in..1985