The ground is wet all over, so I’m sure it must have rained last night, ________?
| A．wasn’t it | B．didn’t it | C．isn’t it | D．doesn’t it |
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The ground is wet all over, so I’m sure it must have rained last night, ________?
| A．wasn’t it | B．didn’t it | C．isn’t it | D．doesn’t it |
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