题目内容：

15.
I have never dined with you,sir; and I see
no reason _______.
A.how should I now
B.how I should now
C.why should I now
D.why I should
now
16.
Advertising is different from other forms of
communication _______ the advertiser pays for the message to be
delivered.
A.in which
B.in this way
C.in that
D.in order that
17.
Unemployment in some large cities was
_______ problem that the government had to provide free grain for many of the
poor people.
A.so a serious
B.a such serious
C.a so serious
D.such a serious
18.
No matter _______ they added to their
knowledge and abilities,the old professor was never satisfied.
A.what many
B.how many
C.what much
D.how much
19.
They didn't break the bad news to his mother
_______ that she might break down.
A.unless
B.for
C.because
D.for fear
20.
_______ electric wires are made from lead is
common practice.
A.What
B.Whether
C.That
D.How

优质解答

答案是：DCDDDC
15.我从来没有和你共餐过,先生,我看现在也没有理由（找你共餐了）.
16.选in that
这里代表 “不同在做广告的人要为传递消息付钱”