Question

高中英语题目。求详细解题步骤谢谢！

13. You as well _____ right.
　A. I are B. I am C. as I am D. as I are
15. -- Shall I wait here for three hours?
　 --Yes. Three hours _____ to wait for such a doctor.
　A. are not very long for you B. is not long enough for you
　C. was not long enough for you D. will be too long for you
19. Three fourths of the bread _____ by Bob, and the rest of the bread _____ left on the table.
　A. was eaten/were B. were eaten/was　 C. were eaten/were D. was eaten/was
20. This pair of shoes _____.
　A. is her B. is hers　 C. are hers D. are her
21.There ______ no life on the moon.
A. is said to have B. are said to have C. is said to be D. are said to be

Answer 1

A
as well as这个对等连接词侧重在前者，而either...or，neither...nor，not only... but also都是就近原则，侧重于后者。
B
three hours表示一段时间，是一个整体，所以谓语动词用单数，当数词加名词表示金额、时间等概念的时候，我们用单数动词，如：
One hundred dollars is enough to buy the jacket.
Twenty miles is a long distance to run.
Ten years is called a decade and twenty years is called a score year.
B
分数词、the rest后跟of短语作主语时，动词的数按照of后面的名词决定单复数，
B
作主语的名词前有量词，谓语动词的单复数，按照量词决定。
C
be said to do是据说做了某事，这里是there be结构用在这个句型中。在there be结构中，主语在be动词的后面，谓语动词的数要按后面的主语决定，所以选择C。希望我能帮助你解疑释惑。

追问

笫1题应该选D？

追答

看错了，空格前面没有as，as well as是一个完整的对等连接词。光只有as well属于副词短语，意思表示“也”，相当于too。这道题目选择D。希望我能帮助你解疑释惑。

Answer 2

DBBBC

上面回答挺好的，如果有疑惑的可追问哦
有点素质好吧，我很热心的，到底是尼玛状况