桡尺近侧关节由()和()构成的圆柱关节或车轴关节。
______are to do it together.
A. I and you
B. You and I
C. me and you
D. You and me
Heaven helps those who help _______.
A. himself
B. herself
C. myself
D. themselves
______ is that bike outside?
A. Which
B. Whose
C. What
D. Who