A:to persuade
B:persuading
C:being persuaded
D:be persuaded
They went there at ten ____( clock ) in the morning.
如图所示,将一个含30°角的直角三角板ABC绕点A旋转,使得点B,A,C′在同一条直线上,则三角板ABC旋转的角度是( )
Where is your sister? She _____in the study.( )