Question

3. (2015山东济南育英中学二模，40.★☆☆) Mary         

arrive at 2：30,but she arrived at 3：00.

A.supposed to   B. am supposed to

C. was supposed to   D. was supposing to

Answer 1

3.C 句意:玛丽应该在2:30到达，但她3:00才到达。由but. 后句子时态可知空格处应用一般过去时，排除B项；be supposed to意为“应该，被期望”，故选C。