raise?????????? v.

A.上升????????? B.募集，征集?????? C.下降

raise           v.
A.上升          B.募集，征集       C.下降

Please raise your voice ________ you can make yourself heard.

1. A.
   because
2. B.
   in order
3. C.
   so that
4. D.
   since

Please raise your voice ________ you can make yourself heard.

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