I bought a ________ /hæt/ for father 's birthday.
Different people may think________about the same thing.We had better do a survey to see people’s ideas.
Taking the bus to work is one of________parts of his life.
If you are in trouble,you can________the police________help.
It’s________cold________go swimming in winter in Beijing.
—How do you learn English?—I learn English________practicing conversations with friends.