第一部分：替代听力题：单项选择（共30分，每小题1.5分）
1. Some people laughed silently, ________others laughed loudly.
A. while B. when C. because D. however
2. With _____she needed ______. She left the supermarket happily.
A. all; bought B. something; to be bought C. all; buying D. everything; to buy
