Maria is fond of all kinds of sports, but she likes swimming ________.
As is well known to us all, in China pigeons stand for peace. However, in India the wheel in its national flag is also a _______of peace.
It doesn’t make a(an)_______to me whether you go or stay.
How did it______ that humans speak so many different languages?
Eric was well prepared for the computer test so that he could be positive about passing it on his first________.
The dead rate is _____ pigs and recovery usually ______ within 7-10 days. A low in; occurs B. rich in;happens C. high in; came about D. poor in;took place