The girl is often heard _______ in the next room.A. sing B. to sing C. singing D. sings

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The girl is often heard _______ in the next room.A. sing B. to sing C. singing D. sings

The girl is often heard _______ in the next room.A. sing B. to sing C. singing D. sings
The girl is often heard _______ in the next room.
A. sing B. to sing C. singing D. sings

The girl is often heard _______ in the next room.A. sing B. to sing C. singing D. sings
答案B hear sb do sth表示听到某人经常做某事,变为被动语态时要把不定式符合to加上,变为be heard to do sth. 查看原帖>>