He usually goes to work by bike it rains.A. exceptB. except whenC. except forD. except th

问题补充：

He usually goes to work by bike it rains.

A. except

B. except when

C. except for

D. except that

答案：

A. except

(答案→)B. except when

C. except for

D. except that

解析：except when 和 except that 后均可接句子，但前者含“当……的时候”的意思，而后者则没有这个意思。