Question

【题目】Sara, my colleague, has been ______ the run all week preparing for her son's wedding.
A.in
B.to
C.on
D.at

Answer 1

【答案】C
【解析】考查介词。on the run逃跑，忙碌，奔波。句意：我的同事萨拉，整个一周都在忙碌着为儿子的婚礼做准备。故选C。