If it ________ for the heavy rain then, we would have arrived here ahead of time.
It was in the Xichang Satellite Launch Center , ________ I had visited, ________ Chang’eⅠwas launched at about 6:05 pm October 24, 2007.
After the class was over, the student apologized _______ the teacher ______ his coming late.
_____________ well prepared you are, you still need a lot of luck in mountain climbing.
I think only when he attends college _______________ more independent of his parents.
Using his hybrid rice, farmers are producing harvests ________________ before.