1.（2019·新课标II卷）I don't see any reason to give up work. I love coming here and seeing my family and all the friends I have made over the years. I work not because I have to, ______ because I want to.”
【答案】but
【解析】考查并列连词。根据句意逻辑可知，此处为转折关系，句意：我工作不是因为我不得不做，而是因为我想做。此处用but与前文not 呼应，构成“不是……而是 ……”之意，故填but。
2.（2019·新课标III卷）On our way to the house，it was raining ______ hard that we couldn't help wondering how long it would take to get there. It was in the middle of Pearl City.
【答案】so
【解析】考查副词。句意：在我们去那座房子的路上，雨下得如此大以至于我们不能不想还要多久才能到达那里。“so…that…”意为“如此……以至于……”，引导结果状语从句。故填so。
3．(2018·北京高考改编)________ we don't stop climate change, many animals and plants in the world will be gone.
【答案】If
【解析】句意：如果我们不阻止气候变化，世界上的许多动植物将会消失。根据句意可知，此处应该用 if 引导条件状语从句，表示主句内容发生的条件。
