10речень з прийменники будьласка

1.at 7:45 am I go to school 2.I got on my bike and said goodbyeto my friends/ 3.I went to the river 4.I walked past the school 5. І was walking in the park 6.I go to a dance on Saturday 7.My friend is at school 8.She called at the door 9.I heard strange sounds at night 10.I brush my teeth in the morning