.When I passed by his door,I heard him _____________.

.When I passed by his door,I heard him _____________. .When I passed by his door,I heard him _____________.A、singB I heard him ____ (sing) when I passed his room I heard someone open the door when I passed by 改错 1、When I passed his room,I heard him （）（sing）2、I always can& 请分析这句子成分：i heard him talking to his mother when i passed 1、When I passed his room,I heard him （）（sing） I heard him ____ (sing) when I passed his room填什么、、、、 I heard them giggle when I passed by the girls. i heard someone___(cry)in the next room when i passed by 什么理 I,passed,heard,her,when,I,singing,by.(连词成句） I heard her in her room when I passed by. Ato sing