“thanks” is polite when someone has done you a favour, but saying it too often is quite another thing．
| A．Though saying | B．If saying |
| C．Saying | D．In spite of saying |
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“thanks” is polite when someone has done you a favour, but saying it too often is quite another thing．
| A．Though saying | B．If saying |
| C．Saying | D．In spite of saying |
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