未知题型 There has been a collision ___ a number of cars on the main road to town.A) composing B) consisting C) involving D)engaging

未知题型 He found the ___ media attention intolerable and decide t go abroad.A) sufficient B) constant C) steady D) plenty

未知题型 Salaries for ___ positions seem to be higher than for permanent ones.A) legal B) optional C) voluntary D) temporary