I like this jacket better than that one, but it costs almost three times______.
He was about to leave the office for home _______someone knocked the door and asked for some help.
There are nearly one hundred foreign students in our university, most of _______ are from America and Australia.
The climbers succeeded in climbing to the top of the mountains, and they owed their success to the preparations they ______.
The students expected there ____more reviewing classes before the final exams.
Such things ___ you described in the report seldom happen now.