_____of modern agriculture, more and more waste is produced.
Many factors influence a student in his/her study, ____ I think are out of a teacher’s control.
We hope that the measures to control the stock market, ____ are taken by the government, will work.
We went to Mountain Tai last weekend, ________, not surprisingly, was crowded with visitors.
The town _______ we visited last month is the one _______ the famous painter was born.
The opening ceremony is to be held in the lecture hall this afternoon, _____ can seat 400 people.