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【题目】It is terrible. I can’t settle down to today.
doing anything B. to do anything C. did anything D. have done anything
【答案】A
【解析】在短语settle down to中， to 是介词，因此其后接名词或动名词。
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【题目】It is terrible. I can’t settle down to today.
doing anything B. to do anything C. did anything D. have done anything
【答案】A
【解析】在短语settle down to中， to 是介词，因此其后接名词或动名词。