—What is your brother doing in the study? —He ________ his homework.A. is doing B. did C. does
People ______always be careful with fire, or it can be dangerous.
______Gina ______Tara are studying Chinese history’ and culture now. They find them rich and amazing.
Colors can change our moods(情绪)and make us happy or sad, energetic or sleepy.
--Have you ever road the book Harry Potter?--Yes, and I think it's very ______. I want to read it again.
Last summer vacation, we ______ many photos when we had a trip to Dalian.