用适当的介词填空。急急急

1. on
2. in
3. behind
4. down
5. at
6. of
7. past
8. to

1. on 在...之上
2. between 在...中间, 后面box用了复数
3. in 在...里面
4. down 固定搭配sit down坐下
5. in 在学校
6. of 我家庭的照片
7. past 一点半
8. to 固定搭配 到了干...的时间

1、where are the bolls?they're on the floor。
2、is the bag in the boxes?yes,it is.
3、who's that girl at/in the room?she's lily.
4、miss gao ,sit down ,piease.
5、is li lei at /in school today?yes,he is.
6、this is a new picture of my family.
7、what's the time?it's half past one.
8、it's time to watch tv.turn on the tv quickly