填空of,on,in,for,at,by,
问题描述：
填空of,on,in,for,at,by,
1、who's（ ）duty today.2、there's a bird ( ) the tree.
3、I go to school （ ） bike.4、look ( ) the picture.
5、It's good ( ) your eyes.6、I get up ( ) seven.
7、How many desks ( ) your classroom?
8、Have a cup ( ) coffee,please.9、He is a friend ( ) my brother.
10、The toy bus is ( ) you.
答
1 on
2 in
3 by
4 at
5 for
6 at
7 in
8 of
9 of
10 for
都是固定用法