Is this an assignment? I hope not. We are not supposed to do homework on this forum.
1. It is necessary that he be told his colleagues` opinion.
2.It is proper that you make up your mind whether you come or stay.
3 It is possible that he turn over a new leaf in his life.
4 It is wrong that he not know these spelling rules. - the subjunctive does not take the word do.
5 It is right that you begin preparing for your autumn exams.
6 It is essential that you have a heart to heart talk.
7 In the rush of things it was a pity that he had forgotten to thank her for her kindness.
Subjunctive mood - Wikipedia, the free encyclopedia
Examples of the subjunctive mood in English
This is the subjunctive mood. It typically expresses wishes, commands (in subordinate clauses), emotion, possibility, judgment, necessity, and statements that are contrary to fact at present
The subjunctive looks like the infinitive form of the verb, and all persons (including the third person singular) are written or spoken without an "s".
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The Subjunctive Mood
Student or Learner