These students will graduate from college next summer, by which time they in college for four years.
At the railway station, the mother waved goodbye to her daughter until the train was _______.
We have no idea at all __________.
_______is certain ______ the Normans conquered England in 1066 and then English changed.
Many years of hard work_______ his great success in the development of this new type of material.
Danby left word _______he would call again in the afternoon .