The train ________ arrive at 11:30, but it was an hour late.

1. A.
   was about to
2. B.
   was likely to
3. C.
   was supposed to
4. D.
   is due to

The train          arrive at 11:30, but it was an hour late.

     A．was used to     B．made sure                 C．was supposed to D．took off       

The train ______ arrive at 11.30, but it was an hour late.

　 A. was supposed to　 B. was likely to　 C. was about to　 D. was sure to

The train ________ arrive at 11:30, but it was an hour late.

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