用括号中词的适当形式添单词；

小题1:It’s a good habit to brush ___________(tooth)three times a day.

小题2:If there are more trees on the earth, there will be ________(little) pollution.

小题3:I hope to finish __________(write) my first book by the end of the year.

小题4:Thanks for _______(give) me so much help with my English.

小题5:More natural reserves(保护区) will be _________(build) in our country in the next few years.

（）是生产性建设项目

A.建筑业建设、文教建设

B.农林水利建设、邮电运输建设

C.物资供应建设、公用事业建设

D.地质勘探建设、科学实验建设