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问题：
[单选题]The girl sometimes has difficulty ______ what the teacher says in class. ( )
A、understand
B、understanding
C、to understand
D、understood
参考答案：
B
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- ● If he i a common carrier，he i abolutely reponible to the owner of the good carried （）any lo or damage to them unle caued by an Act of God or the Queen’ enemie，or the inherent vice in the good themelve，or the negligence of the owner of the good，or a general average acrifice.
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