Iwassufferingfromaheadache.ThatwasprobablybecauseI

来源：语文精选馆 2.24W

I was suffering from a headache. That was probably because I ________in front of the computer too long.

A．worked B．was working

C．have been working D．had been working

考查时态。句意：我头疼。可能是因为我在电脑前工作的太久了。“工作”这个动作在我“头疼”之前一直在进行，所以用过去完成进行时，故选D。