对画线部分提问(Tom was playing ping-pong when l left.)

对画线部分提问(Tom was playing ping-pong when l left.)
Tom was playing ping-pong when l left.
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------ ----- Tom ----- ping-pong?
关键是时态啊,用while还是when?
洋芋乃 1年前 已收到1个回答 举报

vbppo 幼苗

共回答了17个问题采纳率:94.1% 举报

When was playing
不用while来提问

1年前

2
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