谁能把这几句句子换成英语

在教师里有许多学生
There are many students in the classroom.
在天空中有一只小鸟
There is a small bird in the sky.
在一年里有十二个月
There are twelve monthes in a year.
在一个星期里有七天
There are seven days in a week.
有一个老师在办公室中
There is a teacher in the office.