问题
选择题
No wonder he looks tired! He’s been studying for the exams all week, ____ he’s been working in a bar at night.
A．while
B．but
C．plus
D．as
答案
答案：C
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No wonder he looks tired! He’s been studying for the exams all week, ____ he’s been working in a bar at night.
A．while
B．but
C．plus
D．as
答案：C