Mr. Wang has left for Guangzhou. He ____ a speech there in two days.

Turn _____ the left at the second crossing and walk ahead _____ about 20metres.[ ]

My father bought a big house _____ a garden _____ the money. [ ]

How did the accident happen?— You know, it difficult to see the road clearly because it .

Mr. Wang, must I come again to clean the window on Sunday morning?—No, you _____ . I have asked others to do it.