问题
选择题
The reason _______ he gave for being late was ________ he overslept this morning．
A．why; that
B．why; because
C．which; that
D．which; because
答案
答案：C
第一空为定语从句，从句中缺宾语；第二个空为表语从句，从句中不缺成分。
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