— Yes, he ___________ a few minutes ago.
A:Has; cleaned; cleaned
B:Did; clean; has cleaned
C:Was; cleaning; cleaned
D:Has; cleaned; clean
需要准备____个盒子才够用?
― Where is the bank, please?
― Go and then turn right.
函数y=1x-2中,自变量x的取值范围是( )
健康长寿是每个人的美好愿望.以下有关健康生活的说法或做法正确的是( )