Just use this room for the time being, and we’ll offer you a large one ___ it becomes available.
How long do you suppose it is ________he arrived there?
Traveling ______a speed of 160 km/h,we have covered a distance of 120 kilometers ________less than 50 minutes.
The poor little boy ________by his heartless parents was seen begging in the street.
-What is the IOC?-It's ________the International Olympic Committee.
According to the timetable,the airplane will cover the ________from Beijing to Shanghai in an hour and a half.