Success will belong to those ______ never say “impossible”.A. whom B. which C. Who
Is it important ________us __________ learn English well?
I don’t know when Kitty ___________ tomorrow, and please give this message to her when she _________________.
I can’t decide _____.
Don’t worry _____, or you’ll get _____ thin.
It is very kind ____ you to help me with my lessons. It is hard ____ me to learn them well.