— ________ are they doing? — They’re _________. A. What, run B. What, running C. Who, running
Each different ________of China _______ its own special forms of traditional art.
The teacher advised the parents to talk with their son _______.
Beijing is famous _______ the capital city and it is also famous ______ the Palace Museum.
The child without parents ________ good care of by his teachers in this special school.
Getting enough sleep is good for _______ health _______ study.