- What is Jenny doing?
- She______.
A:swims
B:is going to swim
C:is swimming
求:
贞观年间,家境贫寒、学富五车的张三赴京赶考,金榜题名,踏上仕途。张三的时来运转主要得益于( )
自制指南针时,要用磁铁沿____摩擦缝衣针。