单选题
______ costs have increased dramatically.
A、
(A) Advertising
B、
(B) Advertisements
C、
(C) Advertised
D、
(D) Advertise
【正确答案】
A
【答案解析】
Advertising costs describes the cost of providing advertisements. Choice (B) is a noun referring to things. Choice (C) refers to costs that have been advertised. Choice (D) is a verb.
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