where can it be that he studies English?请问这个that 有充当什么吗?

where can it be that he studies English?请问这个that 有充当什么吗? It can be argued that... How can it be that? Can it be in the restaurant_______we had dinner last sunday___you left your wallet?a.where,where b.that,that c.that,where d.where,that倒底怎么理解啊?那能不能理解成前后两个空都强调吗? I hung the picture on the wall ____ can be seen well.A.where B.where it C.that D.so that It remains to be seen ___the plan can be put into practice.--It depends on your determination.A whether B where C how D that IT CAN`T BE THAT TIME 急 It can be said with certainty that —can it be— he studies English?A.where ,that B.what,that C.which,where D.where,which正确答案是A的。可是能说说为什么嘛？就是那个that 充当什么。 英语翻译In cases where the explanation is unknown the scientific point of view is that there is a reason if it can only be discovered __ unemployment and crime are high,it can be assumed that the latter is due to the former.A.Before B.Where C.Unless D.Until __ unemployment and crime are high,it can be assumed that the latter is due to the former.A.Before B.Where C.Unless D.Until Some people can not tell where the good,that is,who can not be replaced can be 翻译一下中文 If that is not yours,( )?A、who can it be B、whose can it beC、who it can be D、it can be whose It can hardly be disputed that she became a real It can be said with certainty that...的意思 Can it be in the office you left you umbrella.A where B that C which D in which为什么Can it be in the office————— you left you umbrella.A where B that C which D in which （ ）unemployment and crime are high,it can be assumed that the latter is due to the former.A before B where C unless D untilunemployment什么意思?为什么选where?