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(shí)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(jié)合語境可知前文描述的過去一直在進(jìn)行并將繼續(xù)進(jìn)行下去的動(dòng)作，故用過去完成進(jìn)行時(shí)態(tài)，選C。
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