Many questions ________ at the meeting, but he answered none.
(2011四川卷,13﹚Always remember to put such dangerous things as knives out of children’s .
(2011福建卷,26﹚The lack of eco-friendly habits among the public is thought to be a major of global climate change.
Anyway, I can’t cheat him—it’s against all my ____.
Teachers have to constantly update their knowledge in order to maintain their professional _____.
We’d better discuss everything _______ before we work out the plan.