I was playing the guitar at this time yesterday 对 playing the guitar 提问

I was playing the guitar at this time yesterday 对 playing the guitar 提问 The class ------football while I was going over their compositionsA.is playing B.plays C.are playing D.were playing when i was a t__,i was good at playing the piano I was playing the piano when I was reading nespaper.这里到底用when还是while. i was playing the piano 和i am playing the piano 第一句成立吗 第二句呢 It was a bright afternoon.I was playing games on the computir...30业阅读理解 I was playing with friends 还是 I playing with friends 为什么要加was或不用加was?那I had fun with friends和 I won the game ,I missed the bus为什么不用加was? When I saw Mary,she ______ on the piano.选项:a、is playing b、plays c、 was playing d、played yesterday evening i was playing the piano when the doorbell (ring .) I was playing with my friends at the park yesterday 句子成分分析 判断对错：I asked him who was that boy playing on the ground? I know where the orchestra___A.has played B.play.C.was playing D.will be played I was playing the piano when I was reading nespaper.这个句子可以变成```I played the piano when I readed news paper. I saw that he was playing football on the playground.同义句转换I saw___ ____ football on the piayground. who was playing with the ribbon? Where were you when I ____?I was ____ on the playground.Where were you when I ____?I was ____ on the playground.A arrived at; at play B reached; at play C got; playing D arrived in ; playing Did you watch the football match yesterday Yes,I did ,you know ,my brother ___ in the match.交代原因.is playing was playing has playedwill play When I went to see him,I saw him the violin.A、playB、to playC、playingD、was playing