Verbal分册求问 98， 101

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101. The Federalist papers, a strong defense of the United
States Constitution and important as a body of work in
political science as well, represents the handiwork of
three different authors.
(A) and important as a body of work in political
science as well, represents
(B) as well as an important body of work in political
science, represent
(C) and also a body of work of importance in
political science is representing
(D) an important body of work in political science
and has been representative of
(E) and as political science an important body of
work too, represent
这道题答案选B，但我不明白为什么是represent而不是represents，题目里明明写的是a strong defense...跪求大神解释
98. Although Napoleon’s army entered Russia with far
more supplies than they had in their previous
campaigns, it had provisions for only twenty-four days.
(A) they had in their previous campaigns,
(B) their previous campaigns had had,
(C) they had for any previous campaign,
(D) in their previous campaigns,
(E) for any previous campaign,
98题OG解释里说A,B,C,D都是因为they,their错误，但我想问army不是复合名词吗，为什么不可以用they,their?


跪求大神解释should引导的虚拟语气的用法！！！！！！！！！

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我自己顶一下