I am learning English ,but I still can not speak it( )

问题描述:

I am learning English ,but I still can not speak it( )
a correct b properly c exictly d actively
这些选项有何区别?

C
correct 意思对,但要用副词correctly
properly适当地,意思不恰当
exactly恰好地,正好地,正确地,精确地,意思合适
actively活跃地,意思不恰当