问题
单项选择题
Tim’s always busy _______ One thing or another and you never find him at play．
[A] in [B] with [C] of
答案
参考答案：B
解析： 本题考查介词的搭配。忙于做某事：be busy with something，所以答案为B。[知识拓展] 此外，还有一种表达方法：be busy doing sth．：He is busy doing his work．二者的区别是：be busy with后边加名词或代词；be busy with后边加动名词形式。