英语达人帮忙下汉译英，谢谢！

1. americans plan their retirement well in advance.
2. they are commonly treated the most hopeful singing stars.
3. i hear from your recommendatory that the employer has phoned to them.
4. the actual attending membesr of our team show up the party are largly less than estimated ones.

1. Americans often arrange their retired life in advance.
2. They are usually thought of as the most promising singers.
3. I heard from your that the employer had given them a call.
4. It is expected that the number of people in our team who showed up at the party is much smaller than the people who should show up.