TOEIC之商用詞匯充電篇-48

USING YOUR WORDS：
    Use each of the following words or phrases in a sentence. Include a contrast to help make the meaning clear.
    1:competent
    2:prudent
    3:optional
    4:close proximity
    5:anxiety
    eg:
    optional
    We did not have to choose this art course as it was optional.
    好了，大家趕快開動腦筋來造句吧。