The ____ populated area was a breeding place forinfectious diseases.
A
【句意】人口稠密的地区是传染病滋生的地方。
【难点】densely意为“稠密地;浓密地;密集地”;sparsely意为“稀地;稀疏地”;improperly意为“不合适地，不协调地”;poisonously意为“有毒地，引起中毒地”。
Thereis______littleinformationabouthimthatwehave______muchdifficultyfindinghim.
He concluded his speech with a remark that failure ____the mother of success.