According to the new rules, if a student________ happen to damage something in the campus, he/she should report it to those concerned immediately.
A modern city has been set up in _____ was a wasteland ten years ago.
The fact is _____I earned my passage by working as an unpaid hand, _______accounts for my appearance.
It is bad _____ to talk with your finger _____ at the other person.
Hundreds of people leave their village to seek their _________ in cities.
Many of them ________ riding wild horses.