589.How long do you think your younger sister will stay here?
_______ Christmas holidays,I suppose.

A.On

B.In

C.During

D.For

590._______ treating the homeless man as a shame of the society,Mr.Turner provided him with food and water.

A.Regardless of

B.As a result of

C.In the event of

D.Instead of

589.答案是D;

stay in some place for+一段时间。

590.答案是D;

instead of 而不是，代替。根据句意，Turner先生没有把无家可归的流浪汉当作社会耻辱，而是给他提供食物和水。