265. Solids can usually be turned into liquids and liquids into gases if we _____ their temperatures high enough.
_______ is known to all, Lu Xun was famous as a great thinker.
I would appreciateback this afternoon.
If something ________, it becomes less and less and eventually disappears completely.
It’s the first time ______ he has helped us.
Here are two pairs of shoes, ______ you may choose.