—I really don’t know how to thank you enough .— .
I’d appreciate ________ if you could let me know in advance whether or not you will come.
________ the difficult maths problem, I have consulted Professor Russell several times.
________ village where I was born has grown into ________ town.
Ralph W. Emerson would always ______ new ideas that occurred to him.
No sooner ________ stepped on the stage than the audience broke into thunderous applause.