No government can justly claim authority ______ it is based on the will of the people.
________ no use talking to him.
I can ________ remember that there was a time when a deep blue sky, the song of the birds, moonlight and flowers could never have kept me spellbound.
Or are you afraid that your friend would laugh at you, or would not understand what you are ________?
I feel like ________to Europe _______ a visit next summer vacation.
Xiao Wang suggested a way to solve the _________.