问题
选择题
Tom has to leave now _________ he can catch the train.
A．so that
B．as soon as
C．because
D．if
答案
答案：A
根据前后句的关系可知答案为A，引导的是结果状语从句。
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Tom has to leave now _________ he can catch the train.
A．so that
B．as soon as
C．because
D．if
答案：A
根据前后句的关系可知答案为A，引导的是结果状语从句。