9. I would have told him the answer had it been possible, but I ________ so busy then.

Question

9. I would have told him the answer had it been possible, but I ________ so busy then.
a. had been b. were c. was d. would be
10. He studied hard at school when he was young, ________ contributed to his success in later life.
a. which b. therefore c. that d. so that
请选择，并讲讲原因。谢谢了！

Answer 1

9.选C，用一般过去时，如果可能的话我会告诉他答案的，但是那个时候我很忙。
10.选A，定语从句，他以前读书非常刻苦，这对他后来的成功起了很大作用。therefore所以的意思，用在这里不合适，句子无法脸上。一个句子，打了逗号就不会用that了，so
that
的意思也不符合。

Answer 2

Had
it
been
possible
I
would
have
told
him
the
answer,but
I
____
so
busy
then.
A
had
been
B
were
C
was
D
would
be
答:
C
分析:
Had
it
been
possible
=
If
it
had
been
possible
这叫通过倒装省略虚拟语气条件句中的if
but引出一个过去的事实情况.I
was
very
busy
then.
我当时太忙了.
其实前面这个条件句不要也行：
I
would
have
told
him
the
answer,but
I
was
so
busy
then.
这叫隐含虚拟条件.
=If
I
hadn't
been
so
busy
then,
I
would
have
told
him
the
answer.

Answer 3

我当时太忙了：
i
would
have
told
him
the
answer,but
i
was
so
busy
then.
其实前面这个条件句不要也行had
it
been
possible
i
would
have
told
him
the
answer,but
i
____
so
busy
then.
a
had
been
b
were
c
was
d
would
be
答:
c
分析:
had
it
been
possible
=
if
it
had
been
possible
这叫通过倒装省略虚拟语气条件句中的if
but引出一个过去的事实情况.i
was
very
busy
then

Answer 4

首先从意思上看就知道前半句是虚拟，后半句是事实，把AD就排除了
其次，注意后半句有个then，说明要用过去时，再加上后半句是事实，所以选C

Answer 5

选b,were因为是虚拟语气，是固定的句型。
选a,which,因为逗号后不能用that，再用b和d，都缺原因，用排除法就选a