| 31. | The Japanese had left under cover of night, fog, and storm.
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| 32. | The landing force was later safely withdrawn under cover of darkness.
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| 33. | The men shot back before they fled, under cover of fog.
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| 34. | Many deployments take place at night or under cover of early morning mist.
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| 35. | The results, announced under cover of darkness, hid as much as they revealed.
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| 36. | Mackellar gradually advanced his breastworks towards the ditch under cover of these batteries.
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| 37. | Relief workers said they expected some refugees to slip away under cover of darkness.
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| 38. | The administration is moving toward these controversial revisions under cover of the election campaign.
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| 39. | That's when the locals take to the slopes under cover of the silvery light.
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| 40. | He attacked under cover of darkness and exchanged artillery fire.
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