Sometimes new ideas have to be tested many times before ______ . A.accepting fully B.being fully accepted C.fully accepting D.fully being accepted

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• Sometimes new ideas have to be tested many times before ______ . A.accepting fully B.being fully accepted C.fully accept
• Sometimes new ideas have to be tested many times before ______ . A.accepting fully B.being fully accepted C.fully accepting D.fully being accepted
• New ideas sometimes have to wait for years before they are___
• I have been waiting for the bus for aI have been waiting for the bus for a long time,but no bus has come Don,t worry ,look,there ____the bus