请写出红色单词的意思（ 每句话里有几种不同的意思）
1）Since there is no time like the present，he thought it was time to present the present.
2）A bass was painted on the head of the bass drum
3）When shot at，the dove dove into the bushes
4））I did not object to the object
5）The insurance was invalid for the invalid.
6）There was a row among the oarsmen about how to row
7）They were too close to the door to close it.
