42.Tourism has helped __________ the economy for many countries, and brought in considerable revenue

問題詳情

42.Tourism has helped __________ the economy for many countries, and brought in considerable revenues.
(A) boast
(B) boost
(C) receive
(D) recall

答案：B
難度：適中0.642857
統計：A(2),B(9),C(1),D(2),E(0)