Much ( )been said about the problem but nothing ()been done so far.
A.正确答案Bhas, had
B.has, has
C.had, had
D.have, have
Much ( )been said about the problem but nothing ()been done so far.
Much ( )been said about the problem but nothing ()been done so far.
A.正确答案Bhas, had
B.has, has
C.had, had
D.have, have