[Maxful]

Thanks, masaegu. I have a couple more questions. Am I right to say that "何をするの" is more appropriate than "どうするの" for the following sentences?

1. あなたが僕だったらどうしますか。

2. 飲み終わった牛乳の紙パックはどうしますか。

3. この洋服はどうするの？


Another question is, while I was watching this dorama, the actress sees a ghost but the ghost disappear almost immediately, so she says 消えてる! Shouldn't it be 消えた?