用所给词的适当形式填空。

1.____(do) Santa bring gifts yesterday?

2.It is ____(shine) in the sky.

3.Let's ____(invite) Danny to our Christmas party.

4.Danny is going to ____(walk) to park Party.

5.Jenny's family is ____(get) ready for the Christmas.

6.Jenny ____(eat) eggs for breakfast yesterday.

7.There ____(be) Christmas lights on our house.

8.Danny ____(have) a pair of skates for Li Ming.

9.Jenny always ____(wear) dresses.

10.They are ____(play) cards.

法律经济学理论将（）作为制度理性的最佳判断标准。

A.公平

B.效率

C.盈利

D.平等