根据语境，选择下框中的单词替换句中划线部分的词或词块，使之意思一致。

A. credit       B. content       C. conduct       D. flashing       E. demanding       F. appreciate       G. bridge

【小题1】To get rid of the gap between cultures, by no means should we give up learning foreign languages well.
【小题2】From foreigners’ point of view, Chinese is regarded as a time-taking and laboring tongue.
【小题3】They made sure that they would investigate relevant clues and organize and carry out necessary research, attempting to solve the problem.
【小题4】The night is brightened with fireworks or firecrackers bursting and shining quickly into the sky during the Spring Festival.
【小题5】What do you think of the subject or idea of the book referred to by the professor?
【小题6】The gods were admired, but it was ancient chemists who deserved the praise.
【小题7】They don’t have any confidence that houses will increase in value.