He ___ without saying good-bye to them, for he always has good manners.

His new novel is _____ his own experience when he was studying in Harvard University [ ]

The researchers found clear and convincing evidence ________ happiness is the key when it comes to better health and longer lives

Fred, I will have an English competition next Sunday.— _______________

Appearing at such a formal party for the first time, I felt____________and wanted to flee