Question

Look! They’re busy ____________football happily.
A. play   B. to play   C. playing

Answer 1

C

试题分析：句意：看，他们正欢快地踢足球。从动词look, 可知描述的是正在发生的事情，要用现在进行时，结构为be+doing, be busy doing sth,正忙于做某事，结合题意故选C。