2012年6月16日18时37分,“ ”飞船在酒泉卫星发射中心发射升空,与“天宫一号”目标飞行器在轨成功进行了交会对接。这是中国实施的首次载人空间交会对接。( )
A:神舟七号
B:神舟八号
C:神舟九号
D:嫦娥二号
English well, I think one must have a lot of practice.
—Who can help me carry the heavy box?
—I think David is _______ to do it. But the door is ______for him to go through.