$\textit{Answers:}$
$\textit{+) S + be + V-ing + (o)}$
$\textit{-) S + be + not + V-ing + (o)}$
$\textit{?) Be + S + V-ing + (o)?}$
$\textit{Yes, S + be}$
$\textit{No, S + be not}$
$\textit{WH) WH + be + S + V-ing + (o)?}$
$\textit{+ or -}$
$\text{Trong đó: S: chủ ngữ}$
$\text{be: to be (am/is/are)}$
$\text{o: tân ngữ}$
$\text{WH: các câu hỏi WH}$
$\textit{Example:}$
$\textit{+) I am cooking dinner now.}$
$\textit{-) She isn't listening to music at present.}$
$\textit{?) Are you leaving?}$
$\textit{Yes, I am}$
$\textit{WH) What are you drawing at the moment?}$
$\textit{I am drawing a crazy house.}$
