Vitamin D helps our bodies make a special chemical, and this special chemical, ________, affects our brains, making us feel happy.
Our graduation party was________success.We sang and danced until it came to________end at ten o’clock.
You can have________second try if you fail this time.
—When did you meet her last?—I don’t remember exactly,but I’m sure it was ________ unforgettable Friday when I went for a walk after ________ wonderful lunch.
Mr. White,who comes from________European country,has formed________habit of attending________church on Sundays.
There is________small temple on the island,which can only be reached by________water.