Improve the highlighted part of the sentence given below: Mr. Smith arrived $at$ India in June last year.

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$His\, powerful\, desire$ brought about his downfall.

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The record for the biggest tiger hunt has not been $met$ since $1911$ when Lord Hardinge,then Viceroy of India,shot a tiger that measured $11$ feet and $6$ inches.

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Will you kindly $open$ the knot?

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If he $would\, have\, tried$ he would have succeeded.

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No one could explain how a calm and balanced person like him could $penetrate$ such a mindless act on his friends.