问题详情：
用所给词的适当形式填空
many (child)are there in your family?
is an (healthy) drink.
k you for (send)emails to me.
father often (search) for information on the Internet.
Sam and his sister (learn) Chinese in China.
【回答】
1. children
althy
3. sending
ches
learning
知识点：语法填空
题型：完成句子
