----- Are you used to______ in the north with the old couples? ----- Yes, I am glad to find out that coal is used______ electricity for home use.
In China, all the students work hard at school _________ going to university for higher education in the future.
Robert is said ___________ abroad, but I don’t know what country he studied in .
He made another wonderful discovery, ______ of great importance to science.
Was it through Mary, _____ was working at a high school, ____ you got to know Tom?
Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more.