Neither Tom nor his parents ________ at home.

There are millions of websites on the Internet and there _______ a lot of useful _________on the websites.

Look, the Maths teacher with his students _________on the grass to have a good rest at present.

 China is one of________ countries in the world.

It is a shock that a great number of students ______ injured in the earthquake and the number of them ______ 2,000 already.