问题
选择题
Lectures were _____ so students could be more focused on their study for the finals.
A．called off
B．broken off
C．blown off
D．set off
答案
答案：A
本题的含义是学校取消演讲，这样学生们就会把更多地精力花费在期末的学习上，call off表示取消的含义，故本题选A。
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