2019年mba考试英语模拟题——连词920

{01}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
解析：
本题选C。

{02}It"s an old car,       it"s very reliable.
A.so
B.but
C.or
D.and
解析：
本题选B。