用括号内所给单词的适当形式填空

用括号内所给单词的适当形式填空
Which is ______(small),the sun,the moon or the earth?
She swims ______(badly)of the three.
What is _______(little)expensive way to travel of all?
She is listening to the teacher ______(careful)of all the students.
Which one do you like _______(good),chinese or english?
The best way _____(learn)a foreign language is practicing more.
It took me about twenty minutes ________(finish)my homework lasst night.
_________(travel)by taxi is very expensive.
How long ________it __________(take)you to go to school every day?