翻译下列句子：1他们的会议下午4点开始，5点结束 2孩子们通常7岁开始上学

1 The meeting will begin at 4 this afternoon,and finish at 5.
2 Children usually go to school when they are seven years old.

1.Their meeting start at four o'clock in the afternoon and finish at five o'clock.
2.Children usually start go to school seven years old.

1:Their meeting will begin at 4 this afternoon, and end at 5.
2:Children usually go to school at the age of 7.

1.Their meetings 16:00, 5:00 concluded
2.7-year-old children usually start school