Mrs Grey preferred to ride a bicycle to work___it was a rainy day ,__it gave her some exercise.47Mrs Grey preferred to ride a bicycle to work___it was a rainy day ,___it gave her some exercise.A except ,andB unless,forC only if,whenD until,because 要答案和理由,并解释一下为什么其他答案不可以,最好详细一点475
问题描述：
Mrs Grey preferred to ride a bicycle to work___it was a rainy day ,__it gave her some exercise.47
Mrs Grey preferred to ride a bicycle to work___it was a rainy day ,___it gave her some exercise.
A except ,and
B unless,for
C only if,when
D until,because
要答案和理由
,并解释一下为什么其他答案不可以,最好详细一点
475
答
B 根据句意 除非下雨 Mrs Grey 喜欢骑自行车去上班 因为锻炼身体
答
for 一般放在句中表示原因，把其他都排除了
答
答案是B.意为如果不是雨天Grey夫人更喜欢骑自行车去上班,因为可以得到锻炼.unless=if not,for表原因.A中except不可直接加句子,and不合理.C和D意思不正确.
答
B 除了下雨天才骑车上班，因为可以锻炼
for这里是锻炼的意思 没什么解释 就是根据句意的