_________ hard one may work, one cannot master a foreign language in a year or two.
—How do you think I should receive the reporter? —______ you feel about him, try to be polite.
Examination compositions, together with most business letters and government reports, are the main situations ______ formal language is used.
—Who is making so much noise in the garden? —______ the children.
I haven’t read ______ of his books, but judging from the one I have read I think he’s a very promising writer.
The inspector ______ his fingers over the sheet of newspaper. There were some marks on the surface of the paper.