有几道选择题要求教.1.In __________ and the lesson began.
A.the teacher came B.came the teacher C.the teacher coming
D.did the teacher
2.Let us suppose that old man suddenly crossed the road and imagine it _________,
you will clearly see the whole event.
A.would happen B.happening
3.还有一个 1.Here you are.2.Here comes the bus.
同时here引导,为什么谓语位置不一样呢?