题目内容:
They called in an electrician _____ he could put a finger on the cause of the short circuit.
A.to hope
B.to be hoping
C.hoping
D.to have hoped
参考答案:
答案解析:
They called in an electrician _____ he could put a finger on the cause of the short circuit.
A.to hope
B.to be hoping
C.hoping
D.to have hoped