The report noted that nicotine breathed inby a smoker increased the need of the heart ________ oxygen

I fell in love with the pretty girl ________ I saw her. [ ]

Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.

_____ my daily work at school, I spare a few hours each day to practice playing the violin at home.

ouring now. Are we still going campingtomorrow—-_____ it is good or bad, we will set off asplanned.