Ⅲ. Read and classify. 读一读，把句子序号填到相应的栏目中。
Work hard at school. Work hard at sports. Work hard at home.
a. Make the bed. b. Clean the bedroom.
c. Play basketball. d. Wash the dishes.
e. Clean the blackboard. f. Listen to the teachers.
g. Run every day. h. Play ping-pong with friends.
i. Do exercise every day. j. Answer questions at class.
答案：Work hard at school: e, f, j
Work hard at sports: c, g, h, i
Work hard at home: a, b, d
Ⅳ. Read and choose. 选择词语，将句子补充完整。
how where why who how many how often how much
1. —
is singing in the next room? — My sister.
2. —
are you so sad? — My head hurts.
3. — Excuse me.
can I get to the post office?
— Go straight. Turn left at the traffic lights.
4. — Mum,
are my new shoes? I can't find them. — Under your bed.
5. —
do you wash your clothes? — Twice a week.
6. —
exercise do I need? — About an hour a day.
7. —
books do you have? — Twenty.
“Excuse me”常用来向不熟悉的人打听情况或提出请求(其实质用法是引人注意)，意为“请问；劳驾；对不起”。例如：Excuse me, can you tell me the way to the post office? 劳驾，你可以告诉我去邮局的路吗？“Excuse me”还可以用作从别人面前经过时的礼貌用语，意为“劳驾；对不起”。例如：Excuse me, could I get past? 劳驾，让我过去好吗？
答案：1. Who
2. Why
3. How
4. Where
5. How often
6. How much
7. How many
解析：
1. 回答是“My sister.”，所以问题应该是询问谁在唱歌，用“Who”。
2. 回答是“My head hurts.”，所以问题应该是询问为什么伤心，用“Why”。
3. 回答是“Go straight. Turn left at the traffic lights.”，所以问题应该是询问怎么去邮局，用“How”。
4. 回答是“Under your bed.”，所以问题应该是询问鞋子在哪里，用“Where”。
5. 回答是“Twice a week.”，所以问题应该是询问洗衣服的频率，用“How often”。
6. 回答是“About an hour a day.”，所以问题应该是询问需要多少锻炼，用“How much”。
7. 回答是“Twenty.”，所以问题应该是询问有多少本书，用“How many”。
