问题

________ for the doctor’s careful treatment, he ________ till last year.
A:If it were not, can’t live
B:Were it not, couldn’t live
C:Had it not been, couldn’t have lived
D:If they were not, couldn’t live
B:Were it not, couldn’t live
C:Had it not been, couldn’t have lived
D:If they were not, couldn’t live
正确答案是: