Whoever has finished the task ahead of time will be rewarded, though we dont know who_____

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

Not only _______ finish the task, but also he won the prize.A.does his brotherB.his bro

The leader ordered that the task_____________ as soon as possible.A、finishesB、is finish

I dont doubt_____he can finish the task on time.A．whyB．thatC．whetherD．when

The difficult task _____ me almost a whole week to finish.A.spentB.castC.tookD.lost

He has sufficient time to finish the task.