Although we haven’t got the accurate statistics, it is estimated that ______ 300 factories in this province closed down during the economic crisis.

 Last year the number of students who graduated with a driving license reached 200,000，a(n) ________ of 40,000 per year.(2010·江西)

advise

“This month our family has used ______ water as we did last month.” said Mother .

Because the head-teacher had some important guests to meet, the meeting only _______a few minutes.