— Why do you look so worried?

—My computer broke down and my essay ______ unfinished since.

A．had left           B．has left           C．has been left       D．was left

 --- Why do you look so upset?

   --- There are so many troublesome problems _________.

A. remaining to settle                    B. remained settled

C. remaining to be settled         D. remained to be settled

补全对话。  根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项多余选项。（共5小题；每小题1分，满分5分）

--- Hi, David. You look so happy! Why?

--- I have just finished a short play.      

--- I’m writing a love story, but after the first few pages I just couldn’t write any more.

--- The same thing often happens in the middle of my writing.      

--- Then how should we solve it?

--- Well, take me for example.      Seeing anything interesting happens, I write it down, even it doesn’t make any sense.

--- Does that work for you?

---    

--- Then what is the way out?

--- I usually take a walk in a park and enjoy the sunshine and clean air.     

--- Great! Your measure sounds good. I hope it will work for me.

You look so tired,It's time that you ___

A. to go to bed    B. go to the bed   C. went to bed    D. went to the bed