托业考试

【单选题】 The seminar will adjourn ______ five o'clock.
A．(A) in
B．(B) on
C．(C) at
D．(D) the

网考网参考答案：C
网考网解析：
At is the correct preposition for a specific time. Choice (A) means during (or at the end of) a period of time. Choice (B) is incorrect for a specific time. Choice (D) is an article. 查看试题解析出处>>