21.all the villagers _____the fight against the big flood, _____young and old, men and women. a. joined; including b. joined in; containing c. joined in; including d. joined; containing 22.playing tricks on others is ___ we should never do. a. anything b. something c. everything d. nothing 23.it is in the street _______ the accident happened. a. that b. where c. in which d. on which
