The traffic was held up for more than thirty minutes, ________ caused me to arrive late.
D
非限制性定语从句引导词的选取。
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.
Onaverageabout￡5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
Thechallengeisnotoneofexpansion._______,therapidgrowthinenrollmentoverthelast40yearshascometoanend.
Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.