—Where did you meet your middle school teacher?—It was in the supermarket ______ I was doing some shopping with my son.
Tu Youyou is the first Chinese _________ the Nobel Prize in Medicine for her work in developing effective drugs against parasitic disease.
When______ to danger and conflict, men tend to increase blood pressure, ______nervous or anxious.
Tom nearly missed the flight ______doing too much shopping.
The plan once I objected to________ out fine.
______you didn’t know the rules won’t be an excuse for your failure to report.