Lesson One Courtesy: Key to a happier worldVocabulary Exercises1. (1)sightseeing (2)making-shoes (3)labor-saving (4)heartbreaking(5)housekeeping2. overcome the difficulty wreck a friendshipunscrew the cap of a bottle tighten the cap of a bottlereturn a call feign a great efforttake much trouble dim the lightsacquire the habit have some ulterior motiveattach a string the golden rule have engine trouble display impatienceblow a horn pave a road use the “useful expressi
