Do you know the reason ____ she has changed her mind?
Most animals and plants are sensitive _______ sudden changes in temperature.
Water, _______ seems so simple and common, is what makes life possible.
You _______ not drive so fast. There is plenty of time.
I will never forget how happy I was when I _______ China again. A. set feet in B. set foot in C. put foot in D put feet in
_______ great achievements the future may have in store for China, it’s likely that many of them will be born in northwestern Beijing.