Whenever you are in trouble ,don’t hesitate _____us for help.
________with fright, a hungry fox hid himself in a small cave, ________his tail to the rain.
________from what he said, he must be the thief who has stolen the car.
________from heart trouble for years, Professor White has to take some medicine with him wherever he goes.
________, the boy couldn’t enter his house.
Time________, I can have done it better.