問題補充：
單選題
The machine has been used many years_____ it doesn’t work well occasionally.A.That’s becauseB.It’s no wonder thatC.There’s no doubt ifD.It’s unlikely that
網(wǎng)友答案：
熱心網(wǎng)友 1樓
B解析t’s no wonder that … 難怪……。A中because 要改為why; C中if要改為 that。
