This year’s National Day ____ in a practical way, which is reported in People’s Daily.

1. A.
   is to be observed
2. B.
   observe
3. C.
   observes
4. D.
   is to observe

 This year’s National Day ____ in a practical way, which is reported in People’s Daily.   

A. is to be observed   B. observe     C. observes   D. is to observe

This year’s National Day ____ in a practical way, which is reported in People’s Daily.

A. is to be observed 　　 B. observe     　 C. observes 　 D. is to observe