It was lack of money, not of effort, _________ defeated their plan.

His health is improving day by day It is quite ______that the medicine has a good effect on his disease

Tom is always______ for school and the teacher is very angry (生气的).

______is it that metals plays such an important part in our daily life

105The waters of this great lake, which is also the world’s deepest, have been ____ by waste from a chemical factory