用适当的介词完成下列句子1.Mr Brown is busy ( ) his work 2.The boy has a bad c_英语解答

用适当的介词完成下列句子
1.Mr Brown is busy ( ) his work
2.The boy has a bad cold .please send ( ) a doctor at once
3.What should we do ( )[relax]?

人气：384 ℃　时间：2020-06-29 14:57:25

解答

1.with be busy with sth 固定搭配
2.for sent for 派人去请医生来
3.to 表目的用to