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

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As she was suffering from high fever,she could not $face$ the examination.

Improve the highlighted part of the sentence given below.
$I$ want $you\, to\, clearly\, understand$ that excuses won't do.

Improve the highlighted part of the sentence given below.
Most donors would seriously $protest$ any effort to extrapolate from such limited data.

Improve the highlighted part of the sentence given below.
He $sent\, a \,word$ to me that he would be coming late.

Improve the highlighted part of the sentence given below:
The reason $why\, he\, wrote\, the\, letter\, was\, because$ he could not contact him over the phone.