In spite of advances mad in agriculture, many people around the world still go hungry Why is the case? What can be done about this problem?
There should be no comma after the article a in your sentence. Remove the comma.
It appears that you are missing a comma after the introductory phrase Consequently. Consider adding a comma.
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Don’t put your opinion unless you are asked to give it.
If the question asks what you think, you MUST give your opinion to get a good score.
Don’t leave your opinion until the conclusion.
Here are examples of instructions that require you to give your opinion:
...do you agree or disagree?...do you think...?...your opinion...?