The traffic was held up for more than thirty minutes, ________ caused me to arrive late.
A、itD
非限制性定语从句引导词的选取。
名词解释：copyright
Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.
Thechallengeisnotoneofexpansion._______,therapidgrowthinenrollmentoverthelast40yearshascometoanend.
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.
Importswillbeallowedinproportion_______exports.
