The radio club in our school, which is in ______ charge of Hao Zhe, is much more than just ______music for everyone.
"We must keep a secret of the things _______ here", the general said, _______ at the man in charge of the information office.
.China is one of the largest countries in the world, _______ 9.6 million square (平方) kilometers.
The old sick lady entered the hospital, ______ her two sons.
_______ many times, he still couldn't understand.
Many things _______ impossible in the past are very common today.