his plan seemed to be too difficult,but___it proved to be pr

His theory proved to be right. the operation proved to be very difficult.it proved to be __ plan A have proved to be a failure. proved to be用法 The job proved to be much more difficult than I________ 一：Their plan ____ to be a perfect one.A.proved B.was proved选 The search proved difficult和The search proved to be difficul ______ was his advice that it proved to be worthless. seemed to be deeply struck by his skill The operation proved to be very difficult这句中的prove是什么意思?它和Th The job proved to be much more difficult than I had expected the task we had just completed proved to be more difficult t