The film _____ next week is Avengers: Age of Ultron.
A. showing
B. to be shown
C. being shown
D. to have been shown
查看答案
George called the airline to ______ his flight to London this morning.
A. improve
B. confirm
C. believe
D. insure
A/B/C两两互斥，三者一定互斥
A. 对
B. 错
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