Our project is scheduled to be completed on the twentieth day of the month.

I will turn twenty years old next year.

The Paleogene period was a very important time in the history of the Earth.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

Prepositions are an important part of grammar.

I placed the materials before the important meeting.

I had a great time with my friends at the eve festival.

An abnormality was found in the preoperative examination.