新概念英语第一册课后练习题及答案：19-20
Written exercises 书面练习
A Complete these sentences using am, is or are. 抄写以下句子，用am, is或are填空。 Example：
Those children ______ thirsty. Those children are thirsty. 1 Those children ______ tired. 2 Their mother ______ tired, too. 3 That ice cream man ______ very busy. 4 His ice creams ______ very nice.
5 What's the matter, children? We ______ thirsty. 6 What's the matter, Tim? I ______ tired. B Write questions and answers. 模仿例句提问并回答。 Example：
his shoes/(dirty)/clean Are his shoes dirty on clean? They're not dirty. They're clean. 1 the children/(tired)/thirsty
2 the postmen/(cold)/hot 3 the hairdressers/(thin)fat 4 the shoes/(small)/big 5 the shops/(shut)/open 6 his cases/(heavy)/light
7 grandmother and grandfather/(young)/old 8 their hats/(old)/new 9 the policemen/(short)/tall 10 his trousers/(short)/long 答案： Lesson 20 A
1 Those children are tired. 2 Their mother is tired, too. 3 That ice cream man is very busy. 4 His ice creams are very nice.
5 What's the matter, children? We are thirsty. 6 What's the matter, Tim? I am tired. Answers B
新概念英语第一册课后练习题及答案：19-20
