问题描述:
Last Sunday we heard them sing Peking Opera in that theater.应改为They were heard to sing Peking O
Last Sunday we heard them sing Peking Opera in that theater.
应改为They were heard to sing Peking Opera in that theater last Sunday.
为什么不可以是They were heard by singing Peking Opera in that theater last Sunday
Last Sunday we heard them sing Peking Opera in that theater.
应改为They were heard to sing Peking Opera in that theater last Sunday.
为什么不可以是They were heard by singing Peking Opera in that theater last Sunday
问题解答:
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