为什么是 look for it 而不能是 look it for?

为什么是 look for it 而不能是 look it for? 为什么是look for it 而不是Look it for what's the difference between ''look for'' and ''search for''.为什么是search for $20 to pay my bills而不能是look for. 为什么说 look it up 而不说look it for Is this your book?Yes,it is为什么是it is 而不能说it's look for it还是look it for look it for or look for it turn it up?turn up the radio 但用it的时候为什么是turn it up 而不能是turn up it?up 是介词还是副词？ look为什么是不及物动词 It was difficult for him to buy good shoes because he had such a bigA.pair B.size C.couple D.number为什么是A而不能选B size?It was difficult for him to buy good shoes because he had such a big__ of feet.A.pair B.size C.couple D.number Why don't we take a little break?Didn’t we just have＿.A.it B.that C.one Dthis为什么是C,而不能是it? look for it 与look at it的区别.举例说明 为什么说look it up 却说look for it 月球为什么是卫星而不能是行星 early的最高级为什么是earliest,而不能加most? 为什么是It seemed that 不是It is seemed that?为什么it作形式宾语只能说I found it hard to do sth.而不能说I found it is hard to do sth.? If you want to change for a double room,you'll have to pay _____ $17.为什么是another而不能是more? 为什么是thank you for not smoking而不用no?