do you want to know how --------- your grades without having

do you want to know how --------- your grades without having to spend more time studying.
Over the years,the researchers have done many experiments about animal--------and found that animals can do thheir thinking.
It seems that they had little in ------even though they are twin brothers.
-------------to English,you'd better learn another foreign language.
When he was sixty-five years old,Francis Chichester-------flying and began sailing.
I don't want to take these shoes mainly because they are too--------for me .
After leaving school for --------reasons,he worked as a waiter in a restaurant.
急用 填词~