People in the city kept their sorroundings _______(protect).
2个回答

protected (过分作宾补)

invited (过分作宾补)

walking(现分作宾补)

sung (过分作宾补)

singing (现分作宾补)

missing (现分作宾补)

understood(过分作宾补)

seated(过分作宾补)

cry,to cry (make sb.do sth.; sb.be made to do sth.)

bought (过分作宾补)

过去分词作宾补,表示被动且动作已完成.

现在分词作宾补,表示宾语发出这个动作,且动作正在进行.