Thomas Alva Edison didn’t “invent” the light bulb (灯泡), but rather he ______ a 50 –year –old idea, which is not well –known.
As is known to us all, English books of this kind ______ well in middle schools.
I have finished a large part of the book; the rest ______ more difficult.
I’ll _______ the matter as soon as possible. Just have a little patience.
Whoever comes here to have the meeting will be treated ________ a wonderful dinner.
She made the demand that she ________ at once.