-- _______ do you study for a test?--I study by working with a group.
They are made________14 hours a day.
The MP3 is used for________music.
I won’t believe that the five-year-old boy can read magazines________I test him myself.
—What do you think of this football match?—I’ve no idea.But________is believed that the Spanish team will win.
Potato chips were invented by a chef called________.