Personally I think it is the sales manager, rather than the sales girls, _______ to blame.

Question

A. is
B. that is
C. are
D. who are

Answer 1

答案B
rather than与the sales girls形成比较结构，去掉rather than the sales girl旧可以看出宾语从句实际上是一个强调句，被强调的部分是宾语从句中的主语the sales manager，后面的rather than the sales girls也对句子谓语动词形式的选择形成了一定的干扰。考虑到主谓一致的原则，应该选B。

Answer 2

1.
is
句子的主语是the
sales
manager
rather
than
...不能看作主语。
2.
B
本句考查强调句型，因此第一个空用it
第二个空开头是that;句型It
takes
sb
some
time
to
do
sth.，故第二个空需要出现it
takes;第三个空用whose引导定语从句，修饰the
boy，即the
boy's
family。