Victor apologized for ______to inform me of the change in the plan. (2004上海春)
I can’t imagine what air we would be breathing in if we __________ anything to stop air pollution.
Experts suggest that parents should let their child do tasks that he is physically and mentally capable of doing by himself, ______ will help to build a self-confident kid.
It’s recommended that our plan _____ until it was tested again.
The use of an alcohol breath test by the police greatly reduces the ____of drivers causing traffic accidents.
The couple give ________ attend their 50th wedding anniversary some gifts to share their happiness.