Many people take pills to make sure they will achieve or maintain their desired weight___it will lower their life expectancy(寿命).
With ________ word “PM 2.5” repeatedly appearing in ________ media reports, the public can’t help wondering what it really means.
We have just heard a warning on the radio _____________ a typhoon may be on its way.
I will spend half of my holiday practicing English and _____________ half learning drawing.
I ______________ have passed my examination easily,but I made too many stupid mistakes.
Mom,don’t you think it's OK to play once in a while ____________ it doesn’t affect my studies?