EXERCISE 39.3
Complete each of the following sentences by writing an appropriate form of the verb listed in parentheses. Since more than one form will sometimes be possible, be prepared to explain the reasons for your choices.
Click Submit after each question to record your answer. If your instructor has assigned this exercise set, you must answer every question before your answers will be submitted to the gradebook.
The supply of a product _______ (rise) when the demand is great.
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History ________ (show) that crime usually decreases as the economy improves.
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Ever since the first nuclear power plants were built, opponents ________ (fear) disaster.
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Thousands of Irish peasants ________ (emigrate) to America after the potato famine of the 1840s.
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The soap opera General Hospital ________ (be) on the air since 1963.
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Olivia ________ (direct) the play next year.
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While they ________ (eat) in a local restaurant, they saw a minor accident.
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By this time next week, each of your clients ________ (receive) an invitation to the opening.
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By the time a child born today enters first grade, he or she ________ (watch) thousands of television commercials.
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In one of the novel’s most famous scenes, Huck ________ (express) his willingness to go to hell rather than report Jim as an escaped slave.
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A cold typically ________ (last) for about a week and a half.