题号:11单选题Windy days are characteristic ______ March in that c

题号:11单选题Windy days are characteristic ______ March in that country.
a、on
b、 of
c、 for
d、 by
题号:12单选题He warmly congratulated them ______ what they had achieve；
a、of
b、 on
c、 for
d、 about
题号:13单选题As more and more factories become ____ dependent on oil,the oil-producing countries are more powerful than ever before.
a、normally
b、basically
c、increasingly
d、consequently
题号:14单选题When we finally ____ to get home after the tiring long journey,we could hardly move a step further.
a、tried
b、managed
c、succeeded
d、encouraged
题号:15单选题The minister has been engaged ____ politics all his life.
a、for
b、in
c、on
d、to