Have you seen my dog? I _________ for it and still haven’t found it.
A．lookedB．was lookingC．have been lookingD．had been looking
C
考查時態(tài)，句意：你看見我的狗了嗎？——我一直在找它，并且還沒有找到。結合語境可知前文描述的過去一直在進行并將繼續(xù)進行下去的動作，故用過去完成進行時態(tài)，選C。
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