is important for all of us English loudly in the morning.
A. It; to read
B. That; to read
C. It; reading
D. That; reading
网友回答
(答案→)A. It; to read
B. That; to read
C. It; reading
D. That; reading
解析：考查“it is +adj. +for sb. to do sth.”句型。其中，it是形式主语，真正的主语是动词不定式（to do sth.）,不定式太长，为避免头重脚轻而用it代替，同时，把不定式放在句尾。