Despite many advantages of a bicycle, such as being environmentally friendly, it is not without its problems.
. 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.