The best way to explore _______ countryside is on _______foot.
Once environment damage _____, it takes many years for the system to recover.
As _____ announced in today's papers, the Shanghai Export Commoditiser Fair is also open on Sunday.
–It must have been lots of fun riding round in a car.–Yes, you know this was the first time that _____ round in my own car.
Until then, his family _____ from him for six months.
It's reported that by the end of this month the output of cement in the factory _____ by about 10%.