Will you compete ______ the race? [ ]
Have they found the lost flight MH370?—Not yet. I’m really ______ the people on the plane.
He has to_________ 20 yuan on the book. But I needn’t _______ any money for it.
Don’t play _____ fire. It’s very dangerous. [ ]
The last time I ______her, she ___________ at a medical college.