选词填空（共10小题；每小题1分，满分10分）
从方框中选择恰当的词或短语并用其正确形式填空。

two,  not…at all,  have to,  think of,  be worried about,  make sure,  be proud of,  choose,  be nice to,  keep fit

All the students like him because he always _____________ others first.
She is _________ fit _____________. She often goes to see the doctor.
____________ that there is nothing left behind.
Amy _______________ to be the chairperson of the Students’ Union at yesterday’s meeting.
It’s cold outside. He _____________ put on more clothes.
It’s important for the dancers ________________.
We Chinese ___________________ Liu Xiang and Yao Ming.
Millie goes to the Reading Club ____________ a week.
My teacher and friends __________________ me.
Don’t _______________ your son. He is 18 years old now.