1.是have problem (in) doing sth.还是have problems (in) doing sth.这里的problem可不可以加s 2.如果是很困难的话problem前加什么?

到底是have a problem in doing sth还是have problem in doing sth为什么problem不加s have problem in 还是with? have problem in 还是of 1.是have problem (in) doing sth.还是have problems (in) doing sth.这里的problem可不可以加s 2.如果是很困难的话problem前加什么? 是have problem with还是have a problem with have problem the problem now is that i have lots of problem【】 to ask是problem还是problems 1.Air p_____is a serious problem in the world now.2.People will have m____free time in the future I have a problem in doing something对吗 have a problem in dealing with business 翻译 We have no problem __ (get)there in time. have some problem _____ sthon for in with 选哪个 Have you got the key to teh problem?=Have you the problem?是空格 have problems in doing sth 和have a problem in doing sth have problem in doing和have problems in doing有什么区别 是have a problem doing还是have problem doing,要说原因哦 有没有have problems doing有的话,跟have a problem doing 有什么区别 have problem doing还是have problems doing?Did you have（）with the people when you were in the USA?A.problem to talk B.problems talking C.problems to talk D.problem talking这道题选B还是D?我选的是D因为课本上的课文里有have probl Have any problem doing