Can I say,<br/><br/>(a) His parents cheered for / to him because he won the race.<br/><br/>(b) In the race, Peter was the fast runner. Many people cheered (happily).<br/><br/>(C) Many people cheered loudly because they wished their children to win in the events / race.<br/><br/>(d) Many people cheered them / for them. <b><u>At last/ Finally,</u></b> Peter won the race.