I am doubtful whether I can solve the puzzle, but I ’llhave a ____ at it.A) shootB)

I’m not sure whether I can gain any profit from th

I’m not sure whether I can gain any profit

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

I doubt_____they can swim across the river.A．whyB．thatC．whetherD．when

I have no doubt ________he will overcome all his difficulties.A、ifB、thatC、as toD、whether

You can mock but at least I am willing to