摘要：31．Every solid object reflect a sound.varying according to the size and nature of the object． A．must B．shall C．will D．should
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31．Every solid object______reflect a sound，varying according to the size and nature of the object．
|
A．must |
B．shall |
C．will |
D．Should |
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Every solid object ______ reflect a sound，varying according to the size and nature of the object．
A. must B. shall C. will D. should
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Every solid object ______ reflect a sound，varying according to the size and nature of the object．
- A.must
- B.shall
- C.will
- D.should