根据情境， 写出一个语法上及语义上都正确的单词。 1. —He became ____ ___ after the traffic accident. —Poor boy! He has to spend the rest of his life in a wheelchair(轮椅). 2. —Where’s my sweater? —I saw it _______ behind the door just now. 3. —I hear you are going to study _______ . Which county are you going to? —England. It’s the best place to learn English, I think. 4. —Is the library open every day? —No, on _______ only. It is closed on Saturday and Sunday. 5. —How was yesterday’s charity show? —It was a big _______ . We collected over 100, 000 yuan.