1.With the dictionary ____ him,he will try to finish reading the English storybook.
A.helps B.to help C.helped D.help
2.The discussion came____when an interesting topic was brought in.
A.alive B.lively C.live D.living
3.What surprised us was not what he did but__ he did it.
A.the way B.in the way C.the way which D.on the way
4._____late afternoon that they began to do the homework.
A.Not until B.It was until C.It was not until D.Until
请简要说明理由,