【单选题】Clinical evidence began to__________, suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals.
【单选题】Clinical evidence began to _____, suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals. [ ]
【单选题】Clinical evidence began to ______ suggesting that the new drugs had a wider range of useful effect than had been predicted from experiments in animals.