TOEIC之商用词汇充电篇-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，大家赶快开动脑筋来造句吧。