Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
| A．in case | B．so that | C．as though | D．in order that |
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Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
| A．in case | B．so that | C．as though | D．in order that |
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