Dad, my trousers are old. I want to buy a new ________.
A：trousers
B：one
C：it
D：pair
阅读材料，回答问题。
既忘共和，即称民贼。誓死戮此民贼，以拯吾民。爱国之豪杰共图之。
Stop watching some harmful p____ on TV, which will mislead teenagers.
