What were you doing yesterday afternoon?— We were singing __

What were you doing yesterday afternoon?— We were singing __ What were you doing yesterday afternoon when I was watching what were you doing yesterday什么时态 what were you doing yesterday afternoon?用什么时态?（过去时态还是过去进行时态） what were you doing at four o'clock yesterday afternoon?回答用是 What were you doing _______ A yesterday Bthis time yesterday what were you doing? --Did you ride to beach yesterday?--Yeah.__ we were!A.What f What were you doing when I phoned you yesterday evening? what were you doing _______(昨天晚上 yesterday evening) What were you doing at this time yesterday morning? （1）What were you doing at ten yesterday morning