The factory was built in a secret place, around ______ high mountains.
The soldiers soon reached ________ was once an old temple ________ the villagers used as a school.
After Chang’e-3 landed on the moon on Dec 14, China became the third country _________ this after the US and the former Soviet Union.
---Excuse me, has the train from Beijing arrived yet?--- ________, you are three quarters earlier. It's only 9 now.
The speed limit for bicycles on campus is 15 mph, ___________ otherwise posted.
In manufacturing, cheaper materials are constantly being for the better, more expensive kind.