—Happy birthday!—Thank you!It's the best present I ________ for.(2012·江苏)
Don't have your children _____ for hours reading books in _____ dark a room.
Liaocheng, Shandong Pro. is a beautiful city, ____11 pay a three-day visit.
The teachers are doing what they _____ their stuaits.
They were _____ inventors than pure scientists.
Old as the car is, _____ it works quite well.