The contract says they offer a company six months' free ________if it signs a threeyear lease.
This morning my mother told me _____ she would attend a wedding party _____ she wouldn’t come back home for lunch.
It is the test system, _____ the teachers, that is to blame for the heavy burden(负担) of middle school students nowadays.
Lucy was so excited _______she received an invitation from her friend to visit Beijing.
___ by thick bamboo and high forest, the ancient city hadn’t been discovered until the 1990s.
The saying “Brother is smoking is not a cigarette(香烟), but loneliness.” is popular on the Internet.