31. According to these passages, what is the benefit of planning before you
travel?
(A) Planning is time-consuming.
(B) Planning can cost you a lot of money.
(C) Planning is fashionable.
(D) Planning gives you ownership of your travels.
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統計: A(41), B(11), C(15), D(325), E(0) #2077800
統計: A(41), B(11), C(15), D(325), E(0) #2077800