There are always problems _____ we don't know the language v

There are always problems _____ we don't know the language v _____ i admit that there are problems,i don't agree that the There are many presents.I really don't know _____. The problems are such _____ we can't solve by ourselves.A as 英文翻译There are many things we need to know and that we don't there are so many good nevels here,i really don"t know _____ but sometimes there are some questions when we don't know th we,different,what,to,don't,are,know,there,a lot of,next,food There are -- many beautiful clothes that we don't know which We don't know if there are any________things on other planet .The small children don't know _____. The traffic problems we are looking forward to seeing _____