ALTHOUGH A DOCTOR MAY BE ABLE (A) TO DIAGNOSE A PROBLEM (B) PERFECT, HE STILL MAY NOT (C) BE ABLE TO FIND A DRUG (D) TO WHICH THE PATIENT WILL RESPOND

77. Although a doctor may be able

(A)

to diagnose a problem

(B)

perfect, he still may not

(C)

be able to find a

drug

(D)

to which the patient will respond.