The machine has been used many years it doesn’t work well occasionally.
A. That’s because
B. It’s no wonder that
C. There’s no doubt if
D. It’s unlikely that
网友回答
A. That’s because
(答案→)B. It’s no wonder that
C. There’s no doubt if
D. It’s unlikely that
解析：t’s no wonder that … 难怪……。A中because 要改为why; C中if要改为 that。