up and down ,again and again,hour and

up and down ,again and again,hour and after several long moments,a small hand slowly went up,（ ）back down,and then went up again.after several long moments,a small hand slowly went up,（ ）back down,and then went up again.请问这里为什么是drop down不可以是hold down,hold He ____ early and sat up,and then he ____ down again.这两个空分别填什么?A.got up A.liedB.rose at B.layC.woke up C.laidD.put up D.lain they go up and down in a lift thy ________ a lift _________go up and down When he ______ now and again, the man repeatedly called for his son.A. came with B. came toC. came up D. came down up and down翻译 up and down? up and down 翻译 jump up and down jumped up and down 翻译Pick up the paper and fold side A down. Do you like taking a l_____to go up and down I've been up and down with a virus 英语翻译After a heavy rain,a spider was climbing hard towards his broken net on the wall.Because the wall was too wet,the spider fell down after reaching a certain height.But he continuously climbed up and fell down again and again.The first man up and down什么意思 up and down翻译汉语? we are little babies of a big family.we live in lakes,rivers and seas.When it is hot,we go up intothe sky.When it is cole,we come down again.We help plants grow fast.What are we? I will wake up and start again