The doctors are trying to reduce the patient’s fear _________he would die of the disease.
A. which           B. when
C. that            D. if

The doctors are trying to reduce the patient's fear ________ he would die of the disease.

1. A.
   which
2. B.
   when
3. C.
   that
4. D.
   if

The doctors are trying to reduce the patient's fear ________ he would die of the disease.

[　　]

The doctors are trying to reduce the patient's fear ________ he would die of the disease.

[　　]