急问!They pretended to be working hard all night with their li

请问：The boy pretended to be working hard.中为什么用pretended而不用pre 1.When the boss came,she pretended to be working hard . He pretended to be working hard when his mother entered his They are all working hard ( ) at English. 1.They overcame their difficulty _________ working hard. THEY ARE ALL WORKING HARD（改为同义句） They are hard-working. 1.They are working hard to a____their dreams. They are working ____(hard)to learn English They are working hard to learn English.正确吗 英语翻译After wating all night to buy tickets,they will be too t they want to design their working clothes __a sportswear sty