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题目内容
（河北工程技术学院大学英语1）
18、(单选、2.5分)
She __________be ill because I saw her playing tennis just now.
A、can.t
B、couldn.t
C、mustn.t
D、may not
She __________be ill because I saw her playing tennis just now.
A、can.t
B、couldn.t
C、mustn.t
D、may not
参考答案
