按要求完成句子。
1.This pair of shoes is 20 dollars. (对划线部分提问)
_____ ______ ______ this pair of shoes?
2.there/ many/ mooncakes/ at/ the/ are/ shopping/ centre (.) (连词成句)
___________________________________
3.We saw a smaller box of mooncakes. (改为否定句)
We _______ ______ a smaller box of mooncakes?
4.There are some nuts in the box. (变一般疑问句)
_____ _____ _____ nuts in the box?