——There'll be billions of people to watch the Spring Festival gala on TV tonight.
——I know. The whole world ．It's a really wonderful event.
Awatches
Bis watching
Chas watched
Dwill be watching
网友回答
A. watches
B. is watching
C. has watched
(答案→)D. will be watching
解析：从现在算起的将来的某一时间正在进行的动作或按计划、安排将要进行的动作，用现在将来进行时。所以选D。