The plane wasto arrive 9:30 but was an hour late.A. certainB. likelyC. supposedD. about

问题补充：

The plane wasto arrive 9:30, but was an hour late.

A. certain

B. likely

C. supposed

D. about

答案：

A. certain

B. likely

(答案→)C. supposed

D. about

解析：可联系答.案.网客服索取。