The heavy fog in London made _______deep impression on us, which was sometimes so heavy that we lost ________sight of everything.
More than a dozen workers in that company ________ to get trained last year.
_______ today’s educators are using more and more technology in their teaching , many believe basic handwriting skills are still necessary for students to be successful---both in school and in life.
Newspapers are _______ with advertisements for all kinds of consumer goods.
The patient's progress was encouraging as he could ____get out of bed without help.
Whoever has been to London prefers the weather of Yunnan to _____ of London.