几道有关定语从句的题1)This is the school____the sports meeting is held

几道有关定语从句的题
1)This is the school____the sports meeting is held every year.
2)I'll never forget the day____I went to meet you at the airport.
3)The trees,the branches ____are almost bare,is a very old one.
第三个有选项 A where B of which C in which D on which
给出原因

1,the sports meeting主语 is held 谓语every year. 时间状语.此句缺一地点状语,所以前面的school是地点,这里应该用where引导地点状语从句,如果有选项,也可以选in which
2,同样的第二句缺时间状语,所以用when引导时间状语从句,也可以选on which
3,用which引导宾语从句,the branches of The trees,所以选of which