题干
The twins __________ in Dalian last year. They ___________ here now. （ ）
A：are; were
B：were; are
C：was; are
答案(点此获取答案解析）
B
The twins __________ in Dalian last year. They ___________ here now. （ ）
A：are; were
B：were; are
C：was; are
到的固体产物是
