－What is the rich peasant’s plan?－He has made up his mind to　　　　a home for the elderly in his village.

The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better．

Fully ________ in preparing for the coming exam, she no longer has time to enjoy the various activities in her neighborhood.

Tom asked the candy makers if they could make the chocolate easier ______ into small pieces.

Some people say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.