Question

this is a very interesting book .I‘ll buy it,____

Answer 1

选C.
“no
matter＋疑问词”或“带后缀ever的疑问词”可以表示“不管……”的含义，
引导让步状语从句(前一结构所表示的语气要稍强于后一结构)，
例如：
However
(=
No
matter
how)
much
I
tried,
I
failed
to
work
out
the
maths
problem.
无论怎么努力，
我还是解不出这道数学题。
//
However
(=No
matter
how)
hard
he
may
try,
he
will
not
attain
his
goal.
无论怎样努力，
他都达不到他的目标。
//
Whatever
(=No
matter
what)
you
say,
I
will
not
change
my
mind.
无论你说什么，
我也绝不改变主意。//
Whenever
(=No
matter
when)
you
come,
you
will
be
warmly
welcomed.
不论什么时候来，
你都会受到热烈欢迎。//
Wherever
(=No
matter
where)
you
go,
you
will
find
the
same
thing.
无论到哪里，
你都会发现同样的事情。//
Whoever
(=No
matter
who)
you
are,
you
have
no
right
to
do
such
a
thing.
不管你是谁，
你都无权做这种事。