hot water --- in the students' flats from 5 pm to 7 pm now

问题描述:

hot water --- in the students' flats from 5 pm to 7 pm now
a\ supplies
b\ is supplied
c\ supplied
d\ was supplied
请您说明理由好吗?

B
从状语now 来看,指的是“现在”,故先排除过去时态C,D
主语Hot water(热水)和谓语supply(供应)是被动关系,所以用被动语态,排除C
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