—No one answered when I phoned this morning. Where were you?
—I       for teeth in the dental clinic.
A．was being treatedB．have been treated
C．was treatedD．Treated
A
考查時(shí)態(tài)。根據(jù)上一句when I phoned thins morning 可知，問(wèn)的是過(guò)去發(fā)生的動(dòng)作。故排除B。此處為謂語(yǔ)，排除D 句意為我當(dāng)時(shí)正在牙醫(yī)診所接受治療。
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