—— It's no easy task to catch a ticket on a website that receives l billion clicks daily.一一I can’t agree with you more.There be errors for every single step
________ happens in the world makes us happy and sad too.
It was a pity that the famous painter died _____ his work unfinished.
In some western countries, ________ are called “public schools” are not owned by the public.
Most people in that area objected ________a golf playground there.
I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.