Sorry for keeping you waiting today.这句话对吗?如果不对,是为什么?

Sorry for keeping you waiting today.这句话对吗?如果不对,是为什么? I am sorry for keeping you waiting for a long time为什么用keepin I am very sorry for keeping you waiting so long. Sorry for keeping you waiting for me so long. ---_____ A.Don Sorry for keeping you waiting for me so long 用That‘s all 还是N 英语选择：-Sorry for keeping you waiting for me so long .-_______ I am so desperately sorry for keeping you waiting 什么意思! 有机物都是共价化合物 这句话对吗?如果不对,为什么? I'm( )sorry for keeping you waiting so long,括号里用true的正确形式填空 I am sorry to have kept you waiting.这句话的谓语是? come and work for our magazine as a reporter 这句话对吗?如果不对! hair是可数名词吗“My father has a few grey hair.”这句话对吗,如果不对,那是为什么啊,