Smoking is not _____ in the meeting hall.
Teenagers who discover they were ________ often search for their biological parents when they are old enough.
It was the first time that Zhang Lin had spoken before hundreds of strangers and he spent several days __________ his lecture before he stepped onto the platform.
A tall man __________ and ordered everyone to stand still.
He __________ the agreement at the meeting in public and left angrily.
Everyone was trying to __________ a better idea to persuade him to stay.