Only in this way　　　 to make improvement in the operating system.
A．you can hopeB．you did hope
C．can you hopeD．did you hope
C
本題中“only+介詞短語”置于句首作狀語，須用倒裝語序；因?yàn)榫湟獗磉_(dá)的是一種條件，故使用did不合題意。
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