One of the most important questions they had to consider was__________ of public health
It is rather ______ that we still do not know how many species there are in the world today.
Men and women should be treated equally according to the law, but ______ there is great room for improvement.
The world will be different, and we will have to be prepared to ______ the change.
The Prime Minister refused to comment on the rumor that he had planned to ______.
-What about talking with others while learning spoken English?-In my opinion, ______.