Thomas Alva Edison didn’t “invent” the light bulb (灯泡), but rather he ______ a 50 –year –old idea, which is not well –known.
The man must be the leader of the group, easily ________ by his special uniform.
Teamwork, or cooperation, is ________ it takes for a football team to win a game.
The missing children haven’t been found yet. Something terrible ________ to them.
—Hello, I’d like to see Doctor Smith at 3 o’clock tomorrow afternoon. —Sorry, but he ________ a patient at that time.
—Mum, would you buy some cherries for me? I love them. —I’d like to, but they are not ________ in winter.