一、单项选择(本题共20小题；每小题l分，满分20分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选择。
( ) 1. I think it's _____ useful advice, so I will always remember it.
A. a B. an C. the D. 不填
( )2. Tom doesn't like the film________, but his parents like_______.
A. himself; it B. itself; themselves C. itself; it D. himself; themselves
