关于定语从句的汉译英

问题描述:

关于定语从句的汉译英
1.学生们三年前种的树长得很高了.
2.小明是我所认识的最勇敢的男孩.
3.外国朋友经常参观的颐和园是北京最美的公园

Trees which were planted by students three years ago grow upXiao ming is the bravestboy of those who I knowThe summer Palace which foreigner usually visitis the most beautiful park in Beijing