题目内容：

1.They will send you the book for 50yuan ,________ .
A.includes postage B.postage included C.include postage
2.Though _______ to the party ,Terry didn't go because he had to do homework.
A.was invited B.invited C.inviting
3.The great damage of roads and bridges _______ the difficulty in rescuing those in the earth-stricken areas.
A.added to B.added up to C.was added to

优质解答

1 B
2 B
3 A

追问：

能详解一下吗

追答：

1 独立结构
非谓语动词作状语，逻辑主语须与主句主语不一致，非谓语动词形式另带主语，从而构成复合结构的形式作状语。句中，非谓语动词include是被动用过去分词。
2 让步状语从句
Though he was invited， 省略了he was
3 词组
add to 增加
be added to 被增加
add up to 总计
道路和桥梁的严重损坏增加了营救的难度，不是被增加