【题目】She was supposed ______ at home at the moment, but her mother found her in the park.
A. to be readingB. readC. readingD. to have read
在线课程【答案】A
【解析】
试题句意：这个时间她应该在家，但是她的母亲发现她在公园里。这里be supposed to do;又因为at the moment故用不定式的进行时，be supposed to be doing应该正在做某事。故选A。