My son is very shy, but can you imagine ____ at the English party?

A. him sing B. his singing C. him to sing D. his to sing

My son is very shy, but can you imagine ________ at the English party?

1. A.
   him sing
2. B.
   his singing
3. C.
   him to sing
4. D.
   his to sing

My son is very shy, but can you imagine ________ at the English party in the presence of all his classmates and teachers?

1. A.
   him to sing
2. B.
   him singing
3. C.
   him sing
4. D.
   his to sing