The ________ of school leavers that go to university is about fifty percent.
---Do you like the new pen? ---Yes, it_____ smoothly.
.The Red Army ____ more than 25,000 li and arrived at North Shanxi at last.
News reports say peace talks between the two countries _____ with no agreement reached.
---What made you so angry?
I went to bed early _____ the sleep lost last night.