WITHIN _______ FEW YEARS, _______ PRIVATE SPACE TRAVEL HAS GONE FR...

18. - 25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN
25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN

18.

Within _______ few years, _______ private space travel has gone from concept to reality.

A. Ø / an

B. a / Ø

C. the / a

D. the / the