摘要： A. was proved B. has been proved C. was proving D. proving
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The news report ________ disappointing．
[ ]
A．
proved
B．
was proved
C．
has been proved
D．
was proving
The cause he had devoted himself to __________a perfect success.
A. proving B.proved C. was proved D.has been proved
查看习题详情和答案>>The cause he had devoted himself to _______ a perfect success.
A. proving B. proved C. was proved D. has been proved
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