Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.
D
非限制性定语从句引导词的选取。
TheFrenchmaintaina________separationofpersonalandprofessionallife.
Importswillbeallowedinproportion_______exports.
名词解释：preferredstock
名词解释：copyright
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.