Answer:
(i)
Chuck hooked the leash onto Duke's collar to hold him still. After some
efforts, he took a step. It was a step on the road to recovery.
(ii) Hooper wants to move his paralysed leg and Marcy and Duke are
helping him.
(iii) Duke shook or vibrated in a U-shape like a hockey stick
so that Hooper might stand.
or
(i) The author is referring to Hooper's
right hand as 'good hand'.
(ii) The hooking of the leash on to Duke's collar and Duke's movement was
like lighting a fuse.
(iii) Duke had been anticipating that his master would walk.
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