1. You can't see this sort of mushroom anywhere else → No where else .. 2.If you didn't study more, you would fail in the test.. → Were .... 3.After Mary came in, we started the party. → Soon after 4..If you promise to keep silent, I'll tell it to you. → Only if. 5.If I were in your place, I would forgive him. → Were 6. You will improve your English if you practise it everyday. → Only if .. 7. We couldn't start the match until it stopped raining. → Only when 8.If he had known where she was, he would have tried to pay her a visit.. →Had ... 9.He couldn't go out until he finished his homework. → It was not until 10.If you go home, ask Mum to give me 20 dollars. → Should ............. 11.I won't reveal this to anyone under any curcumstances → Under no circumstances 12. The strange man had hardly left the house when you arrived. → Only after 13.If you don't follow my advice, you will end up in bankrupt → Should 14.If he shaved more often, he would be handsome. → Did. 15.I would have had a better seat it I had arrived five minutes earlier. → Had.