问题补充:
The train was to arrive at 11:30,but it was an hour late.
A. about
B. likely
C. certain
D. supposed
答案:
A. about
B. likely
C. certain
(答案→)D. supposed
解析:考查固定词组。Be supposed to do sth应该做某事;be likely to do sth可能做某事;be about to do sth马上就要做某事;句意:火车本应该在11点30到达,但是晚到了一个小时。故D正确。