1 .

1. In autumn，the days are shorter and the temperature ______．
2. It’s already midnight．Who ________ so much noise outside？
3. —What a mess your room is！
—Sorry．I ______ it up right now．
4. He _______ his hand into the air to get my attention and soon I noticed him．
5. ─Why are you in such a hurry？
─My father’s car _______ down on the way．I have to go to help him．