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

What I should do is the task soon.A、to finishB、finishedC、be finished

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

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

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

【C7】A．devisedB．providedC．fulfilledD．recognized