Although the journey usually takes six weeks, you should allow _

Although the journey usually takes six weeks, you should allow ________ delays caused by bad weather.
A、with
B、of
C、for
D、to
【正确答案】：C
【题目解析】：allow for的意思是“考虑到”。例如：You have to allow for a certain amount of error.（你必须将一定量的误差考虑在内。）原句的意思是“尽管通常情况下会有六周的行程，但是你应该考虑到恶劣天气对行程的耽搁”。因此我们选择C. for。