题干
—Look, the palace is so great.
—Yeah, it nearly 800 years ago.
A：was building
B：was built
C：has built
D：is built
答案(点此获取答案解析）
B
—Look, the palace is so great.
—Yeah, it nearly 800 years ago.
A：was building
B：was built
C：has built
D：is built
