Our foreign English teacher Shirley has a gift for creating an atmosphere for her students _________ allows them to communicate freely with each other.

How many ______ medicine are used for the children of six years old

______ you speak Chinese—No, I can’t.

no life has been found outside the earth, but while some scientists are activelysearching for living things in outer space, others firmly believe there ______

________ with others easily will be harmful to your health, so keep a goodtempered character all the time please.[ ]