A. from time to time B. convoy C. classroom D. global A. sit around B. disapprove C. soldier D. bison A. environmentalist B. shopping mall C. restore D. blouse A. get in B. the Yangtze River C. unable D. sweet potato A. nearby B. star in C. keep D. constitution A. kite B. object C. reinforce D. kebab A. recall B. easy C. top D. cast down A. drainage B. popcorn C. take a look D. forbid A. bad B. faith C. in vain D. regular A. cleverly B. medium C. February D. legend