关于主谓一致的英语问题

1、Two hours_is__enough for us to arrive there on time(C)时间做主语时谓语用单数
A.are B.has C.is D.was

2、I met one of the boys who _was__going to come to China the next month.(C)首先，宾语从句中的时态，当主句是一般过去时时，从句要用相应的过去时态，在这里，met提示主句是一般过去时，所以从句中的助动词也要用过去式，若用would，则后面用go而不是going，所以用was
A,were B.is C.was D.would

3、Either of the plans_is__equally dangerous.(B)either of 修饰主语，谓语用单数
A.are B.is C.has D.have

4、_Both__English__and_French are taught in this school.A)所给的四个短语中，either or和not only……but also要考虑就近原则，与谓语的复数形式不符，both of后用名词复数，与题意不符，而both……and连接并列的两个名词，谓语用复数
A.Both,and B.Either,or C.Both of ,and D.Not only,but also

5.There __was__no hospital in our town in the past.（B)首先，根据时间状语in the past考虑用一般过去时，又因为no修饰后面的名词，所以谓语用单数
A.is B.was C.are D,were

6.He is the only one of the students who __is_elected(D)首先，electde是elect的过去分词，意为当选的，应使用被动语态，且one of修饰先行词students，所以定语从句的主语是单数，谓语用单数。
A.are B have C.has D.is

7.What we need _is__good textbooks.(A)what连接主语从句，谓语用单数。
A.is B.are C have D.has

8.This is one of the best novels that__have___appeared this year.(B)宾语从句的主语that指 best novels所以是复数，从句的谓语用复数。又因为根据句意应是“今年出版的”，不适用被动语态，所以填have。（zhidao.baidu.com/question/227390724.html）
A.have been B.has C ,had been D.have

9.It_is__I who_am_leaving for London.(C)强调句It is…… that，判断that\who后面的谓语时直接将It is……that省略再判断。
A.is...is B.am....is C.is.....am D.am....am

10.That they were wrong in these matters_is___now clear to us all(A)that引导的主语从句，主句谓语用单数。
A.is B,was C .are D.were

第一题：is.
bread
and
butter
是表示一个单一概念的短语“奶油面包”。就像pen
and
ink
笔墨，needle
and
thead
针线
第二题：are.
swimming
,running
是两个概念，一个是游泳，一个是跑步
第三题：is.
这题和第一题一样，短语意思是“早睡早起”

TOM
as
well
as
two
of
his
classmates
.......invited
to
the
party
1was
2were
3have
been
4had
been
这一题选1
为什莫不选4呢
这是因为句中没有过去完成时的时间状语，如时间段
＋before/by
the
end
of+过去时间等。