The large family is really a heavy_______ on his shoulder, so he has to work day and night.

China Daily gave us a vivid ________ of the successful ___________of Chang’er II. 

Deng Xiao Ping’s works ___ publihed.

. Who would send so many flowers on such an ordinary day? It makes no______.

I listened to Dr. Johnson’s lecture about biology, but I failed to get its key ____.