问题
选择题
It was along the Mississippi River _________ Mark Twain spent much of his childhood.
A．how
B．which
C．that
D．where
答案
答案：C
考察连词。根据句子结构可知，该句为强调句，强调句的特点是去掉it was that 以后句子结构完整，即Mark Twain spent much of his childhood along the Missippi River.