Please remain until the plane has come to a complete stop.
______we don’t lose hope, there is still a chance for us to survive the snowstorm.
I am afraid that our plan won’t be passed at the meeting because the majority of the members are said to _______it.
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.