It is ______ fashion differs from country to country_____ may reflect the cultural differences from one respect.

As we all know, with the development of science and technology, the earth’s resources are ________ at an alarming rate, so we should make good use of them.

Our school is not very big. There are only about ______students.

Scientists are convinced _______the positive effect of laughter _______ physical and mental health.[ ]

Mum is coming. What presentfor your birthday?