[originaltext]Where are the stamps? (A) The post office is closed. (B) The st

游客2025-06-10  4

问题  
Where are the stamps?
(A) The post office is closed.
(B) The stamps are in the top drawer.
(C) The letter was not stamped.
How often do you take a vacation?
(A) I took one of them.
(B) Four to five times an hour.
(C) I take a vacation twice a year.

选项 A、 
B、 
C、 

答案 C

解析    Twice a year answers how often. Choice (A) incorrectly answers in the past tense. Choice (B) is not realistic.
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