1.The nursery is bright and cheerful.
2.This kind of material was seldom used in building houses during the middle Ages.
3.People from many places were drawn to the city by its growing economy.
4.The soldier displayed remarkable courage in the battle.
5.How do you account for your absence from the class last Thursday？
6.Almost all economists agree that nations gain by trading with one another
7.The conference explored the possibility of closer trade links.
8.The chemical is deadly to rats but safe to cattle.
9.During his lifetime he was able to accumulate quite a fortune.
10.It‘s impolite to cut in when two persons are holding a conversation.
C stand up
11.We are debating where we should go for a holiday.
B talk loudly
12.His behaviour is in every way perfect.
13.I remember seeing him somewhere previously.
14.We guarantee that letters posted first class will arrive the next day.
15.Some desirable changes have taken place in this town.