问题
选择题
– Do you know who cleaned the blackboard, Tina?
-- Yes. John _____.
A. do B. does C. did
答案
答案：C
对于问题的简短回答可用人称+助动词，本题的关键词是cleaned，故本题用助动词did，故本题选C。
搜题请搜索小程序“爱下问搜题”
– Do you know who cleaned the blackboard, Tina?
-- Yes. John _____.
A. do B. does C. did
答案：C
对于问题的简短回答可用人称+助动词，本题的关键词是cleaned，故本题用助动词did，故本题选C。