题目内容
Peter hurried through dinner, changed into old clothes, _______ in the lab for three hours.
A. worked B. working C. and worked D. to work
C
解析:
略
练习册系列答案
相关题目
题目内容
Peter hurried through dinner, changed into old clothes, _______ in the lab for three hours.
A. worked B. working C. and worked D. to work
C
略