1.What do you think _____ the Great Wall?

1.What do you think _____ the Great Wall?
A.on B.for C,from D.about
2.There are many activities____ kids.
A.of B.with C.for D.about
3.I was busy all day yesterday .(改为同义句)
I _____ a ______ day yesterday.
4.We had great fun playing in the Children's Palace.(改为同义句)
We ______ _______ in the Children's Palace.