问题补充：
One day last week I went a walk in the country. 1.
In the morning the weather was well and the sun was 2.
shining;the sky was blue and there were no could. 3.
Soon a cool wind started blown and black clouds 4.
were covered the sun and then it started to rain. 5.
There were no houses in sight,but I got very wet. 6.
After a hour or so,I managed to catch a bus which 7.
took me home.But when I arrived I was shivering 8.
and I knew I had caught a bad cold.I must 9.
have taken my coat.I had nothing to do but to 10.
stay at home and wait for a doctor.1.went后加for
答案：
(答案→)1.went后加for
解析：
1.went后加forgo后可以接v.ing;to do sth.;for sth.
2.well→fine/nicewell作“健康”讲是adj.，作“好”讲是adv.。
3.could→clouds应该用复数，否则为...was not a cloud
4.blown→blowingstart后可以接to do或doing.
5.去掉were此处应该用主动语态
6.but→so前后为因果关系。
7.第一个a→anhour为元音音素开头。
8.正确。
9.must→should,must have done表示现在对过去的推测；should have done表示过去该做的事而没有做，且带有责备意味。
10.去掉第二个tobut前面有do的不同形式时，后面的不定式不带to。
