当他走进教室时,才意识到他没带书包
问题描述：
当他走进教室时,才意识到他没带书包
When he came into the classroom,he ___ that he _____ _____ to take his backpack
今天上午他们在操场上踢足球了
This morning they ____ ____ on the playground
答
When he came into the classroom, he (realized) that he (had) (forgotten) to take his backpack.
This morning they (played) (footbal)l on the playground.