()3. Jingjing helps her friends. She is so .

A.tired
B.helpful
C.sad

3. 本题考查形容词词义辨析。A 选项意为“疲惫的”；B 选项意为“有帮助的；乐于助人的”；C 选项意为“难过的”。根据“Jingjing helps her friends.”可知，晶晶乐于助人，是有帮助的，故选 B。

()4. Pingping is happy to warm her family.

A.in
B.on
C.up

4. 本题考查固定短语搭配。warm up 是固定短语，意为“使暖和；热身”，这里表示平平很高兴能够温暖家人，A 选项表示“在……里面”，B 选项表示“在……上面”，故选 C。

()5. Daming, can you help the room?

A.clean
B.make
C.wash

5. 本题考查动词词义辨析。“help (to) do sth”表示“帮助做某事”，clean the room 表示“打扫房间”，B 选项意为“制作；使”，与 room 搭配不符合语境；C 选项意为“洗”，与 room 搭配也不合适，故选 A。

四、交流生 Mary 向大家介绍了她丰富多彩的周末生活，让我们一起来看看吧。根据短文内容，选择正确的答案。
Hi, I'm Mary. I'm ten years old. I'm from America. Now I am studying in Beijing, China. My favourite subject is Chinese. I like reading Chinese storybooks.
On Saturday morning, I usually do my homework. My mother often goes shopping and my father often goes fishing.
On Saturday afternoon, I often do chores with my parents. I can wash the clothes. My mother often cleans the kitchen. My father cleans the windows and the car. We often visit my grandparents on Sunday. Sometimes we eat out with my grandparents. I like Chinese food, but I can't cook it.
()1. Where is Mary from?
A. China.
B. America.
C. Australia.
()2. Mary usually on Saturday morning.
A. does her homework
B. reads Chinese storybooks
C. does chores
()3. Mary can .
A. wash clothes
B. clean the kitchen
C. clean the windows
()4. When does Mary visit her grandparents?
A. On Saturday morning.
B. On Saturday afternoon.
C. On Sunday.
()5. Mary can't .
A. eat out
B. cook Chinese food
C. take pictures

1~5 B A A C B
1. 根据文中“I'm from America.”可知，玛丽来自美国，故选 B。
2. 根据文中“On Saturday morning, I usually do my homework.”可知，玛丽在星期六早上通常做作业，B 选项和 C 选项在星期六早上未提及，故选 A。
3. 根据文中“I can wash clothes.”可知，玛丽会洗衣服，B 选项是玛丽妈妈做的事，C 选项是玛丽爸爸做的事，故选 A。
4. 根据文中“We often visit my grandparents on Sunday.”可知，玛丽在星期日看望她的祖父母，故选 C。
5. 根据文中“I like Chinese food, but I can't cook it.”可知，玛丽喜欢中国食物，但是她不会做中国食物，故选 B。