用所给动词的适当形式填空
问题描述：
用所给动词的适当形式填空
1,We____(experiment)until we succeeded in mixing the right color
2,After all the people were_____(seat),the meeting began
3,His success_____(please)his teacher,His parents are also_____(please)with him
4,It's said that the two organizations have_____(combine)to form one company
答
1.experimented
2.seated
3.pleased; pleased
4.been combined