1. What do city walkers always do along the way?
2. How many city walking themes are there in Xiao Xiao's workshop?
3. Where can Zhang Xiaoxin see so many kinds of chili peppers?
4. What does Zhang Xiaoxin think of Changsha?
5. What do you think of city walking?

1. They always take photos and join in fun activities.
2. Over 30.
3. In the food market.
4. It is really a lively city.
5. It is a new way to have fun. (答案不唯一，符合题意且不超10词即可)

1. You needn't the ticket. It is free for the children.
2. Sixty of the students in our school go to school by bus.
3. Many disabled people have trouble in activities. Let's help them.
4. The best way to manage money is to and avoid unnecessary spending.
5. My son, don't just yourself. Work with your classmates, please.
6. He cuts the apple into two .

1. pay for
2. per cent
3. daily
4. make a budget
5. think of
6. halves

1. 根据句子“It is free for the children.”可以推断出前一句应该是说不需要支付费用，所以应该选择“pay for”，并且前面有情态动词need，所以使用原形。
2. 根据句意“我们学校60%的学生乘公交车上学”，“Sixty ______ of”后面接的是百分比，所以选择“per cent”。
3. 句子中提到“许多残疾人在进行日常活动时有困难”，根据句意应选“day”，但需要形容词修饰名词，故转化为“daily”。
4. 句子中提到“管理钱的最好方法是...避免不必要的花费”，可以推断出应该选择“make a budget”（制定预算），且空白处需要动词短语，所以使用原形。
5. 句子中提到“不要只想着你自己”，根据句意选择“think of”，且为祈使句的否定形式，所以使用动词原形。
6. 句子中提到“他把苹果切成了两半”，根据句意选择“half”，由于前面有two，所以使用复数形式“halves”。