The transition from wife's to mother's role require the wife to () to the completely new situation in daily life.

单项选择题The people for the experiment were chosen completely ().

A．at length
B．in essence
C．at random
D．in bulk

单项选择题His office is () to the President's; it usually takes him about three minutes to get there.

A．related
B．adhesive
C．adherent
D．adjacent