Without the friction (摩擦力) between feet and the ground, people would ______ be able to walk.
. This January will be very precious for us by which time we_______reviewing Senior Book I.
. New policies, _______ to ensure that compulsory education is truly free, _______by the local government across China since the start of school on September 1.
. The winning of hosting ______ 2010 World Expo is ______ victory not only for Shanghai residents, but for the people of the whole Chinese nation.
. Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale.
. Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University.