This room is _________. They share the room with each other.

If we don’t pay much attention to the , the pollution will get worse and worse.

His collection of ancient pots, old uniforms of the kings and splendid wedding dresses of royal family _____ a small fortune.

We must take measures to prevent a possible ______ between the two sides.

Jennifer is always absent from school, ________ I suppose is why she is blamed now and then.