According to the meaning of the sentence and the prompt,fill in the blanks with proper pronouns.
问题描述：
According to the meaning of the sentence and the prompt,fill in the blanks with proper pronouns.
1.He lent me a few books,but _____ of them is easy enough for me.
He lent me a few books,and _____ of them are easy enough for me.
2.Mum,where is _____ schoolbag?I can't find it.
3.Work hard and try _____ best to get the first place in the match,boys and girls.
答
none
all
my
your