đây là bài tự viết nhưng phải theo công thức nên mình lm cáh của mình
thì past countinious ta có cấu trúc
s + was / were + v-ing
s + wasn't / weren't + v-ing
was / were + s +v-ing
matt phoned while we were playing basketball
the doorball rang while i was studying
anna felt assleep while she was doing her homework
the television was on but nobody was watching it
