【推荐1】Some people are bad at recalling names and faces, so it's possible that they have a condition called face blindness, ______ people suddenly have trouble recognizing family members, friends or even themselves．

A．for which

B．which

C．where

D．of which

【推荐2】___ is left over may be put into the refrigerator, ____ it will keep for two or three weeks.

A．Whoever; when	B．Whenever; which
C．Whatever; where	D．Whichever; while

【推荐3】I paid a visit to a company last week, _______ my mother works.

A．which

B．where

C．when

D．that