Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver _____ obey in this city.
The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.
_____ according to the instructions, the robot can behave like a human being with average IQ.
The door _____ open, no matter how hard she pushes.
When I first met Doris I didn’t like her, but I ______ my mind.
An air crash accident happened to the plane, ______.