There are over 58, 000 rocky objects in _______ space, about 900 of which could f

Question

There are over 58, 000 rocky objects in _______ space, about 900 of which could fall down onto _______ earth.

A．the; the

B． 不填; the

C．the; 不填

D．a; the

Answer 1

正确答案：B