Junk messaging has been a headache for y
题型:选择题
问题:
Junk messaging has been a headache for years, __the action taken by the authori-ties has not yet produced the results expected
A.as
B.but
C.so
D.before
Junk messaging has been a headache for years, __the action taken by the authori-ties has not yet produced the results expected
A.as
B.but
C.so
D.before