选词填空；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 1. All the students like him because he always _____________ others first. 2. She is _________ fit _____________. She often goes to see the doctor. 3. ____________ that there is nothing left behind. 4. Amy _______________ to be the chairperson of the Students’ Union at yesterday’s meeting. 5. It’s cold outside. He _____________ put on more clothes. 6. It’s important for the