You had better save your time ________.[ ]
What do you think of the TV play?-Wonderful. It is worth___ a second time.
Can you lend me the dictionary ________the other day? —No problem.
Oh, Mrs. Liu, your necklace looks nice. Is it new? — No, I ____ it for two years.
Now more people are paying attention to the school bus safety. — So we believe ________ there will be fewer accidents in the future.