27. You should write the first letter of the sentence _____ capital one.
_____ in 1636, Harvard is one of the most famous universities in the United States.
Mr. Green stood up in defense of the 16-year-old boy, saying that he was not the one ____.
— Why don’t you turn to Professor Lee for some advice?— _____ What if he refuses to help or something?
_____ endless work, most of which is done in vain, some of the adult are confused of their goals of life.
— You should have paid the bill for her.— I _____ to, but she refused.