Since no other way to escape from the flood, ____ only safe thing is to take ____chance.
Children growing up in a single parent family ______ to beaggressive and ill-tempered.
_____many times, he finally understood it.
Every year _____ money and energy is spent on environment protection.
I am not appealing for myself. I am appealing ________ all the ordinary teachers.
Nobody knows for sure what effect global warming has ___ our environment in the long term.