-----Excuse me, but I wonder if Joan is available at 3:30 this afternoon.
-----I’m afraid he Harry Potter and the Philosopher’s Stone.
A. will watch
B. will be watching
C. is to watch
D. is watching
网友回答
A. will watch
(答案→)B. will be watching
C. is to watch
D. is watching
解析：考查时态题。根据上句话可知，在下午三点半时他恐怕正在看哈利波特。将来进行时，表示在将来的每个时间点将正在做的动作。