That was so serious a matter that I ____________（除了叫……来外，别无选择)the police．

That was so serious a matter that I had no choice but ______ the police.

A．called in

B．calling in

C．call in

D．to call m

That was so serious a matter that I___________(除了叫警察来外，别无选择).

That was so serious a matter that I had no choice but______the police.

A．called in

B．calling in

C．call in

D．to call in

A．a so serious mistake

B．so a serious mistake

C．such a serious mistake

D．such serious a mistake

How do the university critics like the serious cultural criticism？

A．Cultural criticism is not serious enough when the articles are written in the cozy prose style.

B．Popular culture is so prevailing that serious critics are not willing to keep to the shallow standards.

C．Serious cultural criticism is full of insignificant quarrels and the public do not really trust it.

D．Cultural critics have become so serious as to tell the stories imbued with American intellectual Puritanism.

That was so serious a matter that I had no choice but ______ the police.

A．called in

B．calling in

C．call in

D．to call in

That was so serious a matter that I had no choice but ______ the police.

A．called in

B．calling in

C．call in

D．to call m

Soon comics were so prevalent as to attract the attention of serious critics.

A．successful

B．prosperous

C．widespread

D．persuasive

The writer may probably believe that ______.

A．few people have realized how serious the problem of pollution is

B．the problem of pollution has not yet become a major concern

C．the problem is not so serious that it does not require an immediate solution

D．people are so eager for the benefits of modern society that they pay little attention to the problem of pollution

That was so serious a matter that I had no choice but ________ the police.

A) called in

B) calling in

C) call in

D) to call in