Раскрыть скобки 1) it’s necessary that problem (to be solved) today. 2) oh, if she (to accept) his proposal! 3) even if i (to tell) you, you (not to believe) the story. 4) he feared lest i (to forget) about my promise. 5) it’s time you (to confess) your fault. 6) it (to be) reasonable to call before you go. 7) i wished he never (to learn) those facts about his father. 8) we demanded that this group of industrial enterprises (to shop) emission of harmful substances into the air. 9) he smiled as if he never (to hear) more pleasant thing before. 10) it’s terrible that i’m in hospital now. if the pavement (not to be) slippery, i (not to fall) and (not to hurt) my leg. 11) his wish is that the whole family (to gather) in his old house again. 12) she was so furious, it seemed as if she (to hate) the world itself. 13) (to be) ours a successful campagne! 14) nobody supported his decision that children (to be sent) alone.

1) It’s necessary that problem be solved today. ИЛИ It’s necessary that problem should be solved today.
2) Oh, if she accepted his proposal!
3) Even if I told you, you wouldn't believe the story.
4) He feared lest I should forget about my promise.
5) It’s time you confessed your fault.
6) It would be reasonable to call before you go.
7) I wished he had never learnt those facts about his father.
8) We demanded that this group of industrial enterprises stop (ИЛИ should stop) emission of harmful substances into the air.
9) He smiled as if he had never heard more pleasant thing before.
10) It’s terrible that I’m in hospital now. If the pavement were not slippery, I wouldn't have fallen and would not have hurt my leg.
11) His wish is that the whole family would gather in his old house again.
12) She was so furious, it seemed as if she hated the world itself.
13) Be ours a successful campagne!
14) Nobody supported his decision that children be sent (ИЛИ should be sent) alone.