I found _______impossible for______ to work out the maths problem.
— How about Thursday morning? Say, 10 o’clock? — OK. I’ll be expecting you then.
Many graduates wish to find a career _____ they can use what they have studied, but often no such luck.
______ others think of you, you need to have a clear idea of yourself.
I’m sorry I didn’t see you when you entered — I ______ my homework.
______ it or not, I’ve got to complain something about this decision.