问题描述:
动词不定式
She was heard ( ) an English song in her room last niant .
A sing B sang C to sing D singing
该选什么?be was heard to do
She was heard ( ) an English song in her room last niant .
A sing B sang C to sing D singing
该选什么?be was heard to do
问题解答:
我来补答展开全文阅读