(2013·辽宁，29)To her joy，Della earned first the trust of her students and then ________ of her colleagues.

I’m sure your suggestion will ____the problem.

(2013·高考江苏卷)With inspiration from other food cultures，American food culture can take a________ for the better.

The ______ of air and water makes it impossible to live on the moon.

 While intelligent people can often ________ the complex, a fool is more likely to complicate the simple.