Our government’s plan to fight against air pollution will focus on _____ information and handling PM2.5.
The class ______ big. Now the class_______ practicing swimming.
Each of us has to write a ______ report every three weeks.
Mary was born in 1752 in a rich family in _____ is now the state of Virginia.
His plan was such a good one_________we all agread to accept.
They went into the room and saw a large piano standing____ the wall,covered with thick cloth.