The whole building _____ burned down, but the heavy rain _____.
| A．might have; would help |
B．could have been; helped |
C．must have; helped |
| D．should have been; was helping |
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The whole building _____ burned down, but the heavy rain _____.
| A．might have; would help |
B．could have been; helped |
C．must have; helped |
| D．should have been; was helping |
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