He was almost asleep, ____ with all this hard work.
B
【句意】他干了这么多重活儿，累得精疲力竭，差不多睡着了。
【难点】wearout意为“使疲乏;使厌倦;使耗尽”;weardown意为“使消瘦，使厌烦”;wearoff意为“渐渐减少;消逝”;wearaway意为“消磨，打发，虚度;(时光等)流逝”。
I_______thatthere_______aneveningpartyonSaturdayevening.
Thelocalgovernmentleadersaremakingeveryeffortto__theproblemofpoverty.
Oneoftherequirementsforafireisthatthematerial____toitsburningtemperature.
____thecenterofourplanetarysystemwasconsideredasheresybythechurchintheMiddleAges.