—When were you born?—I was born ______a cold winter night.
----Don't forget to come to our school assembly(集会)tomorrow morning.----I won't. I just now.
The railway _______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
If we don’t study hard, we will in our class.
----Would you like some coffee?----Yes, and please get me some milk, too. I prefer coffee _______ milk.
It’s believed that our moods are sometimes by colours. Many scientists are doing some research (研究) on this subject.