Xiao Ming practises his spoken English once there is a chance and that is it takes to live his dream to be a good guide．
A. what
B. that
C. how
D. why
网友回答
(答案→)A. what
B. that
C. how
D. why
解析：考查表语从句。表语从句 it takes to live his dream to be a good guide缺takes的宾语，所以用A，what。