A. revolve B. Mother's Day C. little by little D. helper A. trickle B. drainage C. may D. arrangement A. New Year's Day B. path C. accusation D. unfortunately A. Spring Festival B. advent C. application D. nickname A. unsmiling B. detective story C. province D. Tree Planting Day A. thither B. June C. clever D. lollipop A. acid rain B. Utah C. April D. tube A. preposition B. pipe C. aerial D. Easter A. architect B. many C. grass D. bored A. red pocket B. back C. it D. typewriter