I heard him ____ (sing) when I passed his room填什么、、、、老师说应该填singing、、我觉得应该填was singing呢

I heard him ____ (sing) when I passed his room该填什么?为什么这样填? I've never heard of him before. His letter was especially welcome as I ____ from him for long.3QA.haven’t heard B.would not heard C.hadn’t heard D.didn’t heard 18.I've heard him ____ about you often.a.speak b.speaks选什么,怎么分析的? I heard him singing改为被动语态which is correct?then I heard him sing? I heard him singing there改被动句是heard singing还是heard to sing I don't think you've heard of him before,____?A.have you B.do I C.haven't you D.don't I .When I passed by his door,I heard him _____________. I heard him ____ (sing) when I passed his room填什么、、、、老师说应该填singing、、我觉得应该填was singing呢 英语翻译I ____ three ____ ____ ____ about him. I heard from him last week的意思 i know you're afraid of heard from him,是什么意思? last night i heard him driving his pigs to market. i must remember to tell him that the garden needs ____(water)怎么写?求理由2.the old man sat there ,____(listen) to the broadcast.3.what you heard from the recorder was a ____(record)speech. i didn't laugh at him.instead ,i helped him 同义句I helped him ____ ____ ____ at him. I often hear him ( ) in the room I often heard him ( ) in the room 一个单选I've-----him but I don't know him A.heard about B.learned C.heard from D.heard 英语翻译I think ____ ____ of him ____ you do.