—Darlin, shall we change our mattress(床垫) for a better one, the price of which is a twice more, OK?—All right. I get a headache when it comes to figures.
While studying, fix your mind on what is really important, or you will ______remembering nothing.
There are many beautiful mountains ______ in the south of China.
The experts announced that anything _____ is good for the heart ____ good for the brain.
Film has a much shorter history, especially when _____ such art forms as music and painting.
It is helpful for children to form a good habit by asking them to _____ all the toys after they finish playing.