问题
选择题
Catherine telephoned to the airport to ______ whether Flight 24 for San Francisco is departing on time.[ ]
A. prove
B. ensure
C. identify
D. confirm
答案
答案：D
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Catherine telephoned to the airport to ______ whether Flight 24 for San Francisco is departing on time.[ ]
A. prove
B. ensure
C. identify
D. confirm
答案：D