There is no choice but to move forward.

He was waiting in front of the house.

I ate half of the pizza.

I have been to Japan three times before.

I contacted him beforehand.

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.

He made some preliminary statements before getting to the main topic.