The steel works in which David has worke
问题:
The steel works in which David has worked for five years us with raw material in large quantities in the past two years. [ ]
A.has been supplying
B.was supplying
C.have been supplying
D.were supplying
The steel works in which David has worked for five years us with raw material in large quantities in the past two years. [ ]
A.has been supplying
B.was supplying
C.have been supplying
D.were supplying