The last thirty years _________ the quick development in almost every field in China.
A．sawB．had seenC．have seenD．would see
C
考查時態(tài)。根據(jù)句意用一般現(xiàn)在時。句意：上一個30年已經(jīng)見證了中國幾乎各個領(lǐng)域的迅速發(fā)展。
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