B Listen and order

a □
b □
c □
d □
e □
f □

答案略

C Point, ask and say

What are
these/those?
They're ... Are
these/those ...?
Yes, they are. / No,
they aren't. They're ...
D Read and tick

1 ...
Yes, they are.
□ a Are these butterflies?
□ b Is this a butterfly?
□ c Are those butterflies?
2 ...
It's a cow.
□ a What's that?
□ b What are those?
□ c What's this?
3 What are these,
Grandpa?
...
□ a It's an orange.
□ b They're oranges.
□ c Those are oranges.
4 ...
They're chickens.
□ a Are they chickens?
□ b What's this?
□ c What are these?

C部分示例（可根据图中动物灵活替换）：
A: What are these?
B: They're pigs. Are those sheep?
A: Yes, they are.
D部分：
1. □c
2. □a
3. □b
4. □c

C部分是农场情景的对话练习，需结合图中动物，使用指示代词"these（指代近处事物）"和"those（指代远处事物）"完成问答：
用"What are these/those?"提问远处或近处的事物是什么，回答用"They're + 动物复数名称"；
用"Are these/those + 动物复数名称?"进行一般疑问句提问，肯定回答为"Yes, they are."，否定回答为"No, they aren't. They're + 对应动物复数名称"。
D部分是匹配题，根据答语和图片场景选问句：
1. 答语"Yes, they are."是复数一般疑问句的肯定回答，图中蝴蝶在远处，要用指代远处复数事物的"those"，选c；
2. 答语"It's a cow."是单数事物的回答，图中牛在远处，对应提问"What's that?"，选a；
3. 问句"What are these?"是复数提问，回答需用"They're + 复数名词"的结构，选b；
4. 答语"They're chickens."是复数事物的回答，对应提问"What are these?"，选c。