Question

Which of the following sentences best expresses the idea?

1. My sister asked me if I knew Oscar and will he be at the dance.
2. My sister asked me whether I knew Oscar and whether he would be at the dance.
3. My sister's asking me whether I know Oscar and wpuld he be at the dance?
4. My sister asks me whether I know Oscar and would he be at the dance?​

Answer 1

2 is the answer I know it is

Answer 2

Number 2 it’s more clearly spoken