This theory is found to be in line with the experimental results. Which of the following is similar to the underlined words?
Yang Liwei spent the whole evening talking about the things and persons ________ none of us has ever heard of in CCTV station.
There is a ______ cup on the table.
If you don’t study hard, you’ll regret, _____ you?
I thought _____ no use talking with him. _____ was a waste of time.
Every boy and every girl ________ pleased when they saw Shenzhou VI was sent up to space.