根据句意及所给的汉意、首字母及所给词的适当形式，完成句子。
1．--What is the boy doing? --He is taking photos with a c_________．
2．--Can you work out the math P_________? --No，I can't．It's too difficult for me．
3．--What does your father look like? --He is medium h_________ with thick glasses．
4．If it is _________（sun），we'll go shopping in the mall．
5．I think you will be friends if you are _________（friend）to them．
6．--What are you doing，boys?
--We are reading story books．
--Will you please stop _________（listen）to a piece of pop music?
7．--Where did you go yesterday? --We _________（swim）in the pool happily．
8．The mother decided _________（send）her daughter to America．
9．Do you know what makes him_________（think）you are a write?
10．I wrote a letter to thank him for _________（give）me a nice birthday gift．
1．camera 2．problem 3．height 4．sunny 5．friendly
6．to listen 7．swam 8．to send 9．think 10．giving