Đặt câu cho từ gạch chân
1,The opera was first performed in 1992
-> Then
2,The book is very interesting
-> He is
3,The fire has destroyed many houses(passive voice)
-> Many houses
4, Helen wasn't happy until she returned her hometown
-> It was not until
5, He didn't study his lesson very carefully, so he got bad marks
-> If
6,He is still interested in playing sports in spite of his age
-> Although