摘要：The next step in exploring outer space might be sending people there in spaceship. A.不填; a B. 不填; 不填 C. the; 不填 D. the; the
网址：http://m.1010jiajiao.com/timu3_id_2502883[举报]
The next step in exploring _________ outer space might be sending people there in ________ spaceship.
- A./; a
- B./; /
- C.the; /
- D.the; the