Question

Do you know the...girl?
A: sing
B: sang
C: singing
D: song

Answer 1

Singing would make the most sense because none fit properly in there

Answer 2

Answer: Singing.

Explanation: A doesn't make sense. If you put together 'Do you know the sing girl?', that does not make sense

B is the same thing for A.

C makes sense because it is showing that if you know about the singing girl and if you put it together it makes sense.

D is tricky, but they would have made 'girl' capital, so it won't be the answer.