— _____ you at school last night?
— No, I _____ at home.
A:Was; was
B:Were; were
C:Were; was
D:Was; were
关于世界人口分布的叙述,正确的是
下列分布发达国家最多的洲是( )
如图,等腰三角形ABC中,BD,CE分别是两腰上的中线.