The children ……..loudly when their parents arrived home from work. A. were playing B. play C. playing D. played
The children ……..loudly when their parents arrived home from work.
A. were playing
B. play
C. playing
D. played
Đáp án: A
Giải thích: Diễn ta một hành động đang diễn ra bị một hành động khác xen vào ( S+was/were+Ving when +S+V2/ed)