stick

I stick on a stamp.

私は切手を貼ります

I stick a stamp on the envelope.

私は封筒に切手を貼ります

I stick a stamp on the envelope at the post office.

私は郵便局で封筒に切手を貼ります

I stick a stamp on the envelope at the post office today.

私は今日郵便局で封筒に切手を貼ります

I stick a stamp on the envelope with my mother at the post office today.

私は母と今日郵便局で封筒に切手を貼ります