We all know that the Spring Festival is special holiday when whole family get together.

问题补充：

We all know that the Spring Festival is special holiday when whole family get together.

A. the, the

B. a, a

C. the, a

D. a, the

答案：

A. the, the

B. a, a

C. the, a

(答案→)D. a, the

解析：一个特别的假期，可数；定冠词特指全家人，一家人。