（江苏）英语译林牛津版选修6unit1同步课时练习（2）及答案 section b word power ⅰ.用所给词或短语的适当形式填空 participate in, strengthen, guarantee, positive, fitness, foolishness, drive away, be supposed to, in charge, work out 1. let us be merry and _________ all cares _________. 2. we provide a 5-year __________ against rust. 3. the exercises are designed to ___
