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65.Is＿necessary to tell his father everything?

A. it              B. that             C. what          D. He

Is＿necessary to tell his father everything?

A. it              B. that             C. what          D. he

Is ______necessary to tell his father everything?

A. it　　　 B. that　　 C. what　　 D. he

Is _____ necessary to tell his father everything?

　 A. it 　 B. that

　 C. what 　 D. he

65.Is＿necessary to tell his father everything?