Вопрос по английскому языку:

We were very tired. We came all the way ... foot.
A)by
B)in
C)at
D)on
E)with

If it ... , we ... go to the country
A) will rain, shan't
B) rains, shan't
C)rained, shall
D)will rain, will
E)rains, shall

Please, ring me up as soon as you ...
A)will come
B)come
C)came
D)shall come
E)would come

Yesterday's rain spoilt my hat completely; I ... buy a new one.
A)can
B)had to
C)may
D)must
E)might