今世缘 广场舞:2.She______in that room foran hour .((sing )

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has been singing ,现在完成进行时
has sung , 现在完成时
for an hour 表一段时间，所以用现在完成进行时或现在完成时
涌现在完成进行时强调持续，一直在做。

She (has sung) in that room for an hour .(sing )

has been singing
她已经在那个房间唱了一小时的歌了。（一个小时她一直在唱歌）

has been singing ,现在完成进行时,"她一直在唱,一小时了"
has sung , 现在完成时,"她已经唱了一小时了"

has been singing

has been singing .

2.She______in that room foran hour .((sing ) In 1993,people found out that R.K.Wiilson Photo was not real中的real可否换成true TAKE THAT !TAKE THAT! That teacher said that that that that that boy used in that sentence was not correct. that night insist that that 用法 take that #3. () that ......... 话说that