What_____the teachers_____(do)this time yesterday?

What_____the teachers_____(do)this time yesterday? What_____________________(you/do)this time yesterday? what-he-(do)at this time yesterday Do you know________ at this time yesterday? What_____the twins_____(do)now? what did you do at this time yesterday? I （do）my homework at this time yesterday. What were you doing (do)this time yesterday. 1Do you know _____ this time yesterday? this time yesterday?this time of year? at this time yesterday与this time yesterday的区别 this time yesterday还是at this time yesterday?