问题描述：
1.The river goes ________ the city from west to east.
A.through B.over C.into D.throughout
2.What's the time ______ your watch ,please?
A.on B.in C.by D.with
请说明原因
A.through B.over C.into D.throughout
2.What's the time ______ your watch ,please?
A.on B.in C.by D.with
请说明原因
问题解答：
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