问题
选择题
— 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 |
答案
答案:D
— 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 |
答案:D