问题补充：
I am not sure from his home to school.
A. how far is it
B. how long it take him
C. how he gets
D. how often he goes to
答案：
A. how far is it
B. how long it take him
(答案→)C. how he gets
D. how often he goes to
解析：句意：我不能确定从他家到学校他怎么到达。本题考查宾语从句的用法。根据宾语从句用陈述语序排除A，根据时态B不正确没有变单三式，D选项不符合题意，结合句意，故选C.
