【C15】A．completedB．endedC．finalizedD．done

Without his assistance, I ________ the research last month.A: would not have completedB;

It is about time that such practices ______.A．are endedB．be endedC．were endedD．must be end

The workers finally called off the strikes.A.put offB.endedC.cancelledD.participated in

【C20】A．completedB．finishedC．fulfilledD．enjoyed

mature 选择能代替的选项A、completedB、prematureC、deliberateD、purified

The rocket will weigh about 200 tons when _____.A. being completedB. completedC. co