----- Nội dung dịch tự động từ ảnh ----- 37. Stupidly, I left my umbrella at home, (which) I left my umbrella at home, ..... 38. He was well trained by famous inventors. He went on to invent many useful machines, (and) 39. I go swimming. I have to keep my eyes closed underwater. (When) 40. The children played in the yard. Their mothers sat on the bench chatting, (whose)