I had Helen's brother _____ the windows,
问题:
I had Helen's brother _____ the windows, but Helen had them _____ instead.
A.to clean; cleaned
B.cleaned; cleaned
C.cleaning; cleaned
D.clean; cleaned
I had Helen's brother _____ the windows, but Helen had them _____ instead.
A.to clean; cleaned
B.cleaned; cleaned
C.cleaning; cleaned
D.clean; cleaned