Medicine shall not be kept where it is ___________ (可接触的）to children.
We have to make sure that our food is ___________ (充裕地) supplied when in winter.
All these plans shall be carried out upon the ________ (批准) of the board of directors.
Nowadays an increasing number of people prefer to live in the country because they believe fresh air is __________ （有益）to their health.
The drug, which is suspected of having serious side effects, has been __________（撤出） from the market.