There was an old man wandering about the corner _____ waiting for someone.
Facing huge costs for their wedding, 62% of ______ surveyed said they would turn to their parents for help.
When the Marathon first came to Beijing in 1981, traffic was not _______ it is today.
Big boy _______ I am, my mother asks me to keep it in mind that under no circumstances _______ go to swim.
What he wants to tell us is that it’s three years _______ he moved here .
National parks are important for preserving many animals, which would _______ run the risk of becoming extinct.