问题
选择题
—What happened to Mark yesterday?
— He arrived at the station too late, _____ , he missed the early train. [ ]
A. therefore
B. however
C. because
D. as
答案
A
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—What happened to Mark yesterday?
— He arrived at the station too late, _____ , he missed the early train. [ ]
A. therefore
B. however
C. because
D. as
A