I think it will be two or three years___our country seds a manned spaceship to the moon.

分类: 作业答案 • 2021-12-28 15:37:58

问题描述：

I think it will be two or three years___our country seds a manned spaceship to the moon.
A.until B.when C.before D.since
seds 打错了，其实是sends

答

before 在……之前
我认为我国发送载人飞船到月球上还得几年时间.