The author implies that if human beings are kept awake for m

The author implies that if human beings are kept awake for more than a week the

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The "executive trainees" ( Line 3, Para. 1 ) are probably th

The "executive trainees" ( Line 3, Para. 1 ) are probably those who are ________

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A passport is a document (issue) ________ by a country to it

A passport is a document (issue) ________ by a country to its citizens that perm

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The students often have (heat) ___________ discussion in the

The students often have (heat) ___________ discussion in the class.

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