89.The ____ shoes were covered with mud,so I asked them to take them off before they got into ____ car.

A.girl's Tom's

B.girls' Toms'

C.girls' Tom's

D.girl's Toms'

90.I'm trying to break the ___ of getting up too late.

A.tradition B.convenience C.habit D.leisure

89.答案是C，此题考查名词所有格，根据题干后半部分的they可知对应复数girls。

90.答案是C,根据句意，要改掉的是晚起床的坏习惯。Habit,习惯。