My opinion about the modern education is not similar to _________of the other teachers’.

—Which tie would you prefer，the black tie or the red one，Madam?—I’ll take ________ to have a change sometimes.

In my opinion,_____ shouldn’t be any doubt that China will become one of the most powerful countries in the near future．

I had to buy ________ these books because I didn't know which one was the best.

—What’s wrong with me, doctor?—        serious. Just a slight cold.