( )his telephone number, the manager had some difficulty getting in touch with the clerk.a.Not knowingb.Knowing notc.Not having knownd.Having not known这道题选哪个,选它的原因是什么,谢谢~

I think you can get his n----- from the telephone book.(首字母已给） what is his telephone number ? I know his telephone number. 帮忙翻译To have his telephone fixed. His telephone number is 5637.一般疑问句 His telephone number is 217-8905 What's his telephone number?_____866-2373 his responsibilities is to screen telephone His telephone number is（792-8126）对括号部分提问 _____ _____ his telephone number. I don'd know A,how many his telephone number B,what is his telephone number --Do you have his telephone number?--He____me his telephone number but I____it. telephone I don'd know A,how many his telephone number B,what is his telephone number C,what his telephone nuber is His telephone number is 23242565．(就画线部分提问) Tom keeps in touch with his friends by telephone His telephone number______(be)4811098.Please_____.(write down them) 英语翻译810508i have his telephone number by chance His telephone number is 535-2375.怎么改一般疑问句?