It was so noisy outside that he couldn't ________ down to read what they had just handed in.
A.settleB.putC.getD.lie在线课程A
注意get down及其他选项构成的动词短语的意思及用法。settle down表示“定居，过安定的生活；平静下来，安下心来”。表后一种意思时to可用作不定式符号及介词，如settle down to write an article, settle down to one's work; get down to sth表示“开始认真对待”，如Let's get down to work.（我们开始工作吧。）本句中to read是动词不定式，因此不能用get down to.