Interchange the affirmative sentence into negative sentence. Everybody admits that he is very helpful.
AHe denies that he is helpful.
BNobody denies that he is very helpful.
CEverybody denies that he is helpful.
DNone of these .
AHe denies that he is helpful.
BNobody denies that he is very helpful.
CEverybody denies that he is helpful.
DNone of these .
Related Questions:
Convert complex into simple by using adverb clause.
They took shelter under a tree because they were driven by the rain.