—What do you usually help your mother________？
—I often do the dishes．

她自愿在当地医院工作。
She volunteers________ ________at the local hospital．

改为同义句
Each of the students in the class has been to the Great Wall．(改为同义句)
________ ________in the class has been to the Great Wall．

The World Health Organization has given some advice on________to protect us from being infected(感染)with H7N9．

—Your tea smells great！
—It’s from India．Would you like________？