All possible means ______. However, nothing can _____ his wife dying of lung cancer.
A.has tried; stop | B.have tried; keep |
C.have been tried; prevent | D.has been tried; stop |
推荐套卷
All possible means ______. However, nothing can _____ his wife dying of lung cancer.
A.has tried; stop | B.have tried; keep |
C.have been tried; prevent | D.has been tried; stop |