The vice-chairman helped with the preparation of the meeting.

I helped him with his homework.

The chairman of the meeting has the responsibility to proceed with the agenda.

All the preparations for the party have been completed.

I prepared hard for the exam.

We have to prepare for tomorrow's meeting.

We will hold a meeting about the new product tomorrow.

He made a copy of the document.

The assistant manager explained the details of the new project at the meeting.

He is the vice president of our company.