I regret ______ that we have no news for you.
The young lady often makes meals ______ for herself for she is _____ about what she eats.
Price control would gradually disappear ________ a free market.
As we know, nothing can be equal to the ______ of parents for their children in the world.
Every evening after dinner, if not ______ in reading books, she can be found _____ on the sofa watching TV.
Some special projects are ________ to protect our environment, so we may be _____ to having a clean and beautiful home in the near future.