I’ve been working all day, but I feel as if I _______ nothing.
A．have been achievedB．were achievingC．had achievedD．a(chǎn)m achieving
C
考查虛擬語氣，此題是與過去相反的虛擬語氣，as if 后應(yīng)用過去完成時態(tài)，句意：我整天一直在工作，但是我感覺好像什么也沒完成。所以選C。
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