___ ,I couldn't lift the box .

___ ,I couldn't lift the box . ___ , I couldn't lift the box .为什么选B不选D .1 ________,I couldn’t lift the box. The box was so heavy that I couldn't lift it .中为什么用couldn't 英语语法C1,__________ ,I couldn't lift the box.A,As I might try 英语翻译46.lock I lost my keys and couldn’t ___ the box.47.exper The box is so heavy that I can't lift it用It is ___ ___ heavy I can't lift the box if you don't help me .I ___be ___to the 10.The box is ________ heavy ________ I can’t lift it. There was a large box behind the door and Peter couldn't ___ I couldn't ___ .The line was busy 英语翻译I‘m very ___ ___ ___ at _____,but I couldn't swim in the