She raised her finger to her lips as _____ for silence.
. Many Chinese people eat _____ vegetables per person today as they did in 1969.
After making a big decision without his parents’ permission, he went abroad to Brazil _____ his brighter career.
–Excuse me, _____ where is the nearest hospital? --Sorry, I am a stranger too.
. The girl came running to the railway station, only __________ the train had left.
. Was it __________ the conference of APEC that made Shanghai the focus of the world then?