合并成宾语从句复合句I don not know.Is it polite to speak loudly at the tabl_英语解答

合并成宾语从句复合句
I don not know.Is it polite to speak loudly at the table?

人气：360 ℃　时间：2020-04-18 08:11:36

解答

I don't know if it is polite to speak loudly at the table.May Iopen the door.同义句。-----you---- ------ ------thedoor?