This is the third time I the movie“Forrest Gump”．

A.watch

B.am watching

C.have watched

D.have been watching

答案及解析： C

解析：

在It is the fist／second／third…last time that…这一结构的that从句中谓语动词必须用现在完成时，实际上是表示到说话时为止动作发生的次数。