( )traveling expenses rising a lot,Mrs.White had to change all her plans for the tour

问题描述:

( )traveling expenses rising a lot,Mrs.White had to change all her plans for the tour
A.since
B.for
C.by
D.with
正确答案是:

a
明显要填“因为”
for不放句首
因为旅游费用上升了不少,Mrs.White 不得不改变全部的旅游计划