With more forests being destroyed, huge quantities of good earth ___________ each year.

As for the accident this time, I think it is Richard         you,        to blame.

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

Every hour and every minute ______precious to us because only six months are left for us to prepare for the college entrance examinations.

Large quantities of time ______ for practising guided writings.