He was responsible for ____________( oversee) the project of the new language center.
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Facing the charge of plagiarism (抄袭), Phillips has repeatedly ____________(proclaim)his innocence.
My American host _____________(compliment)me on my English, which made me very glad.
It is considered impolite in some cultures to visit a friend without ____________ (inform)him in advance.
It’s a well-known fact that China is a(n) ____________(hospitable) nation.