In the street I met the professor_______gave us a talk last week.
You can’t wear a blue jacket _____ that shirt. It will look terrible.
It was a pity that the great writer died ____ his work unfinished.
My uncle died ____ heart disease last summer.
Ryan made _____ his mind to study hard but he didn’t. A. in B/ C. on D. up
What _____ are you guys doing? I am freaking out(我很不安). A. in earth B in the earth C. on the earth D. on earth