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1 . 用环保节能的灯泡有助于家庭节省开支（help）（汉译英）
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2 . We listened to the hero, who saved a boy from the fire, ________ his story in detail.
| A．having told | B．to tell | C．tell | D．told |
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3 . I prefer to have those advanced machines ________ rather than let them ________ by the enemies!
| A．destroyed…used | B．to be destroyed…be used |
| C．destroyed…be used | D．to be destroyed…used |
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