People, especially teens, think it __ great fun to surf on _____ Internet.
The telephone was invented in ________ nineteenth century by Bell.
Which of the following underlined parts is different in pronunciation from others?
He goes to work by bus. Which of the following is correct for the underlined word in the sentence?
—If I work hard at my lessons from now on. Can I do well in them?—Sure. __________.
This hat is too cold. Why not __________ buying a new one?