---How long do you think it will be __________ China sends a manned spaceship to the moon?
--- Perhaps two or three years.
A.when | B.until |
C.that | D.before |
推荐套卷
---How long do you think it will be __________ China sends a manned spaceship to the moon?
--- Perhaps two or three years.
A.when | B.until |
C.that | D.before |