18. Don't worry! He ____ no attempt to leave. He will stay here to help you.
43.It was not until 1936________basketball became a regular part of the Olympic Games. 44.
35.__________________you met the Englishman?
36..___________that she has gone to the United States? 37.
37.________________certain that his invention will lead to the development of production.
38.____________in 1914____________the First World War broke out? 39.