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Course 22197
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Choose the correct form: "If battery technology _____ faster, delivery drones would already be in widespread use."
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Choose the correct form: "Had the battery not failed, the drone _____ its delivery mission."
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Choose the correct form: "If Kumar's team _____ GPS-free navigation software in 2005, they _____ robots indoors at that time."
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Which sentence correctly transforms "If local governments give approval, Zipline will expand" using formal inversion?
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Choose the correct form: "If only the engineers _____ the GPS signal interference before the mission began – the drone would not have crashed."
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Choose the correct form: "I wish regulators _____ the drone certification process – the constant changes are exhausting."
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Choose the correct form: "I wish battery life _____ longer – current drones can barely stay airborne for an hour."
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Choose the correct form: "_____ swarm technology matured earlier, post-earthquake rescue operations would have been far more effective." (Use formal inversion – no 'if'.)
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Which sentence contains a correctly formed third conditional?
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Which sentence correctly uses "if only" to express regret about a past event?
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