Распознайте усилительную конструкцию - вопрос №951754

Выделите  служебные слова it, that, one, определите их функцию.  Распознайте усилительную  конструкцию It is/ was … who that – именно…; It was no before/  until … when – только после…

1.        One can find the necessary information in this journal.
2.        It is believed that the telephone was invented by A. G. Bell.   
3.        Similar problems appeared one year  later.
4.        It wasthus (таким образом) that he began to investigate the airplane propeller.
5.        Opening new streets or widening existing ones caused great protest.
6.        The Eiffel Tower came in for a lot criticism when it was first built.