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Though I have often heard this song _______. I have never heard you _______ it.

A. being sung, sang       B. sang, singing

C. sung, sing   D. to be sung, to sing

Though I have often heard this song _______. I have never heard you _______ it.

A. being sung, sang       B. sang, singing

C. sung, sing   D. to be sung, to sing

Though I have often heard this song _______. I have never heard you _______ it.

A. being sung, sang       B. sang, singing  C. sung, sing   D. to be sung, to sing

11. Though I have often heard this song ______, I have never heard you ______ it.

A. being sung; sang   B. sang; singing  C. sung; sing       D. to be sung; to sing

Though I have often heard this song _______. I have never heard you _______ it.

A. being sung, sang　　　　 B. sang, singing

C. sung, sing　　　　　　　 D. to be sung, to sing