These natural parks are very important for preserving many animals, which would _______ run the risk of becoming extinct.

When you are ______ about something, you are ______ to do whatever you can to get it．

Yao Ming is my favourite basketball player. I regard him____ other players.

—Do you regret paying ten dollars for that book?—No，I would gladly have paid ________.

What___ it is to have a cold drink after an _____ game!