1.difference (名词)
2.best (最好级、最好的工程师)
3.useful(有用的、修饰information)
4.give(had better do sth用动词原形)
5.organization (名词、组织)
6.was made(表被动)
7.improvement
8.be repaired
9.emailed
10.informing
1.difference (名词)
2.best (最好级、最好的工程师)
3.useful(有用的、修饰information)
4.give(had better do sth用动词原形)
5.organization (名词、组织)
6.was made(表被动)
7.improvement
8.be repaired
9.emailed
10.informing