eful how you _____ that jug, it willbreak very easily.

As a scientist, Madam Curie devoted herself ________ to her research and that was why she was given two Nobel Prizes.

Miss Zhu is one of the most popular _________ in our school.

下列句子中加点词的用法不相同的一项是（ ）

If you travel to another country, on business or vacation, it is helpful to learn some of the country’s customs ________ you don’t offend the local people. [ ]