I ____ him the answer ____ possble.,but I was so busy then.
I ____ him the answer ____ possble.,but I was so busy then. A.could tell,if it had been B.must have told,were it C.should have told,had it been D.should have told,should it be
C:should have done表示本应该做某事(而没做) had it been应该是if it had been, 但是前面用的是虚拟语气,这个后面的句子应该用倒装句,所以改为had it been.也表示虚拟. 这句话翻译为: 如果当时可能的话,我本应该告诉他答案的,但是我当时太忙了. 祝你进步.