Điền giới từ phù hợp:
1, Gangnam Style, by a 34-year-old South Korean Singer, Psy, first appeared ______ You Tube in July.
2, Fiona is getting better and better ______ writing compositions.
3, The school cafeteria only opens ______ lunchtime
*Giải thích*
1.Gangnam Style, by a 34-years-old South Korean singer, PSY, first appeared on Youtube in July.
on youtube: trên youtube
2.Fiona is getting better and better at writing compositions.
better là từ so sánh hơn của từ good; (be) good at something: tốt về cái gì
3.The school cafeteria only opens at lunchtime.
at lunchtime: vào thời gian ăn trưa