A: Alice, please tell Eric to call me when he _________ back. B: No problem.
We learn the sayings “Use it ______ lose it” and “Practice _______ perfect”.
Good learners often _______ what they need to learn _______ something interesting.
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.